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pulldown.html

pulldown.html 88 KB
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  1. <!DOCTYPE html>
    2. 

  2. <html lang="en-US">
    3. 

  3.   <head>
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  4.     <meta charset="utf-8">
    5. 

  5.     <meta name="viewport" content="width=device-width,initial-scale=1">
    6. 

  6.     <title>pulldown | BetterScroll 2.0</title>
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  7.     <meta name="generator" content="VuePress 1.9.10">
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  13.       gtag('js', new Date());
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    16. 

  16.     <meta name="description" content="Make Scroll Perfect">
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  17.     
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  18.     <link rel="preload" href="/docs/assets/css/0.styles.0cd93813.css" as="style"><link rel="preload" href="/docs/assets/js/app.c71b64d3.js" as="script"><link rel="preload" href="/docs/assets/js/5.d6412664.js" as="script"><link rel="preload" href="/docs/assets/js/4.4855b9ef.js" as="script"><link rel="preload" href="/docs/assets/js/3.481632b4.js" as="script"><link rel="preload" href="/docs/assets/js/92.795675a1.js" as="script"><link rel="preload" href="/docs/assets/js/56.cd04bae9.js" as="script"><link rel="preload" href="/docs/assets/js/7.518ccda7.js" as="script"><link rel="prefetch" href="/docs/assets/js/1.8644db92.js"><link rel="prefetch" href="/docs/assets/js/10.6f8c38eb.js"><link rel="prefetch" href="/docs/assets/js/100.ee08226e.js"><link rel="prefetch" href="/docs/assets/js/101.fd2f3d9f.js"><link rel="prefetch" href="/docs/assets/js/102.79d86e3d.js"><link rel="prefetch" href="/docs/assets/js/103.7a3ae3b5.js"><link rel="prefetch" href="/docs/assets/js/104.7be4589d.js"><link 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href="/docs/assets/js/90.d65d2d13.js"><link rel="prefetch" href="/docs/assets/js/91.32b2ad41.js"><link rel="prefetch" href="/docs/assets/js/93.818e5569.js"><link rel="prefetch" href="/docs/assets/js/94.79c2b16e.js"><link rel="prefetch" href="/docs/assets/js/95.4810ee5e.js"><link rel="prefetch" href="/docs/assets/js/96.6e382fd5.js"><link rel="prefetch" href="/docs/assets/js/97.e270d7b5.js"><link rel="prefetch" href="/docs/assets/js/98.728ef6c2.js"><link rel="prefetch" href="/docs/assets/js/99.c75096e0.js"><link rel="prefetch" href="/docs/assets/js/vendors~docsearch.2091e099.js">
    19. 

  19.     <link rel="stylesheet" href="/docs/assets/css/0.styles.0cd93813.css">
    20. 

  20.   </head>
    21. 

  21.   <body>
    22. 

  22.     <div id="app" data-server-rendered="true"><div class="theme-container"><header class="navbar"><div class="sidebar-button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" role="img" viewBox="0 0 448 512" class="icon"><path fill="currentColor" d="M436 124H12c-6.627 0-12-5.373-12-12V80c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12z"></path></svg></div> <a href="/docs/en-US/" class="home-link router-link-active"><img src="https://dpubstatic.udache.com/static/dpubimg/t_L6vAgQ-E/logo.svg" alt="BetterScroll 2.0" class="logo"> <span class="site-name can-hide">BetterScroll 2.0</span></a> <div class="links"><form id="search-form" role="search" class="algolia-search-wrapper search-box"><input id="algolia-search-input" class="search-query"></form> <nav class="nav-links can-hide"><div class="nav-item"><a href="/docs/en-US/guide/" class="nav-link">
    23. 

  23.   Guide
    24. 

  24. </a></div><div class="nav-item"><a href="/docs/en-US/plugins/" class="nav-link router-link-active">
    25. 

  25.   Plugin
    26. 

  26. </a></div><div class="nav-item"><a href="/docs/en-US/FAQ/" class="nav-link">
    27. 

  27.   FAQ
    28. 

  28. </a></div><div class="nav-item"><a href="https://github.com/ustbhuangyi/better-scroll/issues" target="_blank" rel="noopener noreferrer" class="nav-link external">
    29. 

  29.   Discuss
    30. 

  30.   <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="Select language" class="dropdown-title"><span class="title">Languages</span> <span class="arrow down"></span></button> <button type="button" aria-label="Select language" class="mobile-dropdown-title"><span class="title">Languages</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/docs/en-US/plugins/pulldown.html" aria-current="page" class="nav-link router-link-exact-active router-link-active">
    31. 

  31.   English
    32. 

  32. </a></li><li class="dropdown-item"><!----> <a href="/docs/zh-CN/plugins/pulldown.html" class="nav-link">
    33. 

  33.   简体中文
    34. 

  34. </a></li></ul></div></div> <a href="https://github.com/ustbhuangyi/better-scroll" target="_blank" rel="noopener noreferrer" class="repo-link">
    35. 

  35.     GitHub
    36. 

  36.     <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav></div></header> <div class="sidebar-mask"></div> <aside class="sidebar"><nav class="nav-links"><div class="nav-item"><a href="/docs/en-US/guide/" class="nav-link">
    37. 

  37.   Guide
    38. 

  38. </a></div><div class="nav-item"><a href="/docs/en-US/plugins/" class="nav-link router-link-active">
    39. 

  39.   Plugin
    40. 

  40. </a></div><div class="nav-item"><a href="/docs/en-US/FAQ/" class="nav-link">
    41. 

  41.   FAQ
    42. 

  42. </a></div><div class="nav-item"><a href="https://github.com/ustbhuangyi/better-scroll/issues" target="_blank" rel="noopener noreferrer" class="nav-link external">
    43. 

  43.   Discuss
    44. 

  44.   <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="Select language" class="dropdown-title"><span class="title">Languages</span> <span class="arrow down"></span></button> <button type="button" aria-label="Select language" class="mobile-dropdown-title"><span class="title">Languages</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/docs/en-US/plugins/pulldown.html" aria-current="page" class="nav-link router-link-exact-active router-link-active">
    45. 

  45.   English
    46. 

  46. </a></li><li class="dropdown-item"><!----> <a href="/docs/zh-CN/plugins/pulldown.html" class="nav-link">
    47. 

  47.   简体中文
    48. 

  48. </a></li></ul></div></div> <a href="https://github.com/ustbhuangyi/better-scroll" target="_blank" rel="noopener noreferrer" class="repo-link">
    49. 

  49.     GitHub
    50. 

  50.     <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav>  <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Plugins Guide</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/docs/en-US/plugins/" aria-current="page" class="sidebar-link">plugins</a></li><li><a href="/docs/en-US/plugins/how-to-write.html" class="sidebar-link">How to write plugins</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>Plugins</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/docs/en-US/plugins/mouse-wheel.html" class="sidebar-link">mouse-wheel</a></li><li><a href="/docs/en-US/plugins/observe-dom.html" class="sidebar-link">observe-dom</a></li><li><a href="/docs/en-US/plugins/observe-image.html" class="sidebar-link">observe-image</a></li><li><a href="/docs/en-US/plugins/pulldown.html" aria-current="page" class="active sidebar-link">pulldown</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/docs/en-US/plugins/pulldown.html#introduction" class="sidebar-link">Introduction</a></li><li class="sidebar-sub-header"><a href="/docs/en-US/plugins/pulldown.html#install" class="sidebar-link">Install</a></li><li class="sidebar-sub-header"><a href="/docs/en-US/plugins/pulldown.html#usage" class="sidebar-link">Usage</a></li><li class="sidebar-sub-header"><a href="/docs/en-US/plugins/pulldown.html#demo" class="sidebar-link">Demo</a></li><li class="sidebar-sub-header"><a href="/docs/en-US/plugins/pulldown.html#pulldownrefresh-options" class="sidebar-link">pullDownRefresh Options</a></li><li class="sidebar-sub-header"><a href="/docs/en-US/plugins/pulldown.html#instance-methods" class="sidebar-link">Instance Methods</a></li><li class="sidebar-sub-header"><a href="/docs/en-US/plugins/pulldown.html#events" class="sidebar-link">Events</a></li></ul></li><li><a href="/docs/en-US/plugins/pullup.html" class="sidebar-link">pullup</a></li><li><a href="/docs/en-US/plugins/scroll-bar.html" class="sidebar-link">scrollbar</a></li><li><a href="/docs/en-US/plugins/indicators.html" class="sidebar-link">indicators</a></li><li><a href="/docs/en-US/plugins/slide.html" class="sidebar-link">slide</a></li><li><a href="/docs/en-US/plugins/wheel.html" class="sidebar-link">wheel</a></li><li><a href="/docs/en-US/plugins/zoom.html" class="sidebar-link">zoom</a></li><li><a href="/docs/en-US/plugins/nested-scroll.html" class="sidebar-link">nested-scroll</a></li><li><a href="/docs/en-US/plugins/infinity.html" class="sidebar-link">infinity</a></li><li><a href="/docs/en-US/plugins/movable.html" class="sidebar-link">movable</a></li></ul></section></li></ul> </aside> <main class="page"> <div class="theme-default-content content__default"><h1 id="pulldown"><a href="#pulldown" class="header-anchor">#</a> pulldown</h1> <h2 id="introduction"><a href="#introduction" class="header-anchor">#</a> Introduction</h2> <p>The pulldown plugin provides BetterScroll with the ability to monitor pulldown operation.</p> <h2 id="install"><a href="#install" class="header-anchor">#</a> Install</h2> <div class="language-bash extra-class"><pre class="language-bash"><code><span class="token function">npm</span> <span class="token function">install</span> @better-scroll/pull-down <span class="token parameter variable">--save</span>
    51. 

  51. 

  52. // or
    53. 

  53. 

  54. <span class="token function">yarn</span> <span class="token function">add</span> @better-scroll/pull-down
    55. 

  55. </code></pre></div><h2 id="usage"><a href="#usage" class="header-anchor">#</a> Usage</h2> <p>First, install the plugin via the static method <code>BScroll.use()</code></p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">import</span> BScroll <span class="token keyword">from</span> <span class="token string">'@better-scroll/core'</span>
    56. 

  56. <span class="token keyword">import</span> PullDown <span class="token keyword">from</span> <span class="token string">'@better-scroll/pull-down'</span>
    57. 

  57. 

  58. BScroll<span class="token punctuation">.</span><span class="token function">use</span><span class="token punctuation">(</span>PullDown<span class="token punctuation">)</span>
    59. 

  59. </code></pre></div><p>pass in the correct configuration in <a href="/docs/en-US/plugins/pulldown.html#pulldownrefresh-options">options</a>, for example:</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">new</span> <span class="token class-name">BScroll</span><span class="token punctuation">(</span><span class="token string">'.bs-wrapper'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
    60. 

  60.   <span class="token literal-property property">pullDownRefresh</span><span class="token operator">:</span> <span class="token boolean">true</span>
    61. 

  61. <span class="token punctuation">}</span><span class="token punctuation">)</span>
    62. 

  62. </code></pre></div><h2 id="demo"><a href="#demo" class="header-anchor">#</a> Demo</h2> <ul><li><strong>Basic Usage</strong></li></ul> <div class="demo-wrap"><div class="demo-nav"><i class="demo-nav-btn icon-code"><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="#000"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="3" d="M10 20l4-16m4 4l4 4-4 4M6 16l-4-4 4-4"></path></svg></i> <div class="v-popover"><div class="trigger" style="display:inline-block;"><i class="demo-nav-btn icon-qrcode"><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="#666"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 4v1m6 11h2m-6 0h-2v4m0-11v3m0 0h.01M12 12h4.01M16 20h4M4 12h4m12 0h.01M5 8h2a1 1 0 001-1V5a1 1 0 00-1-1H5a1 1 0 00-1 1v2a1 1 0 001 1zm12 0h2a1 1 0 001-1V5a1 1 0 00-1-1h-2a1 1 0 00-1 1v2a1 1 0 001 1zM5 20h2a1 1 0 001-1v-2a1 1 0 00-1-1H5a1 1 0 00-1 1v2a1 1 0 001 1z"></path></svg></i> </div> <div id="popover_ko7s38n3rr" aria-hidden="true" tabindex="0" class="tooltip popover vue-popover-theme" style="visibility:hidden;"><div class="wrapper"><div class="tooltip-inner popover-inner" style="position:relative;"><div><div></div></div> <div tabindex="-1" class="resize-observer" data-v-8859cc6c></div></div> <div class="tooltip-arrow popover-arrow"></div></div></div></div> <i class="demo-nav-btn icon-preview"><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="#666"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9.75 17L9 20l-1 1h8l-1-1-.75-3M3 13h18M5 17h14a2 2 0 002-2V5a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"></path></svg></i></div> <div class="demo-code" style="display:;"><div class="demo-code-nav"><button class="demo-code-btn active">Template</button><button class="demo-code-btn">Script</button><button class="demo-code-btn">Style</button></div> <div class="demo-code-content"><div class="demo-code-item" style="display:;"><div class="language-vue extra-class"><pre class="language-vue"><code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>template</span><span class="token punctuation">&gt;</span></span>
    63. 

  63.   <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>pulldown<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    64. 

  64.     <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span>
    65. 

  65.       <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>pulldown-bswrapper<span class="token punctuation">&quot;</span></span>
    66. 

  66.       <span class="token attr-name">ref</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>bsWrapper<span class="token punctuation">&quot;</span></span>
    67. 

  67.     <span class="token punctuation">&gt;</span></span>
    68. 

  68.       <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>pulldown-scroller<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    69. 

  69.         <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>pulldown-wrapper<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    70. 

  70.           <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">v-show</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>beforePullDown<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    71. 

  71.             <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>span</span><span class="token punctuation">&gt;</span></span>Pull Down and refresh<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>span</span><span class="token punctuation">&gt;</span></span>
    72. 

  72.           <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
    73. 

  73.           <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">v-show</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>!beforePullDown<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    74. 

  74.             <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">v-show</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>isPullingDown<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    75. 

  75.               <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>span</span><span class="token punctuation">&gt;</span></span>Loading...<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>span</span><span class="token punctuation">&gt;</span></span>
    76. 

  76.             <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
    77. 

  77.             <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">v-show</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>!isPullingDown<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    78. 

  78.               <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>span</span><span class="token punctuation">&gt;</span></span>Refresh success<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>span</span><span class="token punctuation">&gt;</span></span>
    79. 

  79.             <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
    80. 

  80.           <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
    81. 

  81.         <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
    82. 

  82.         <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>ul</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>pulldown-list<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    83. 

  83.           <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>li</span>
    84. 

  84.             <span class="token attr-name">:key</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>i<span class="token punctuation">&quot;</span></span>
    85. 

  85.             <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>pulldown-list-item<span class="token punctuation">&quot;</span></span>
    86. 

  86.             <span class="token attr-name">v-for</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>i of dataList<span class="token punctuation">&quot;</span></span>
    87. 

  87.           <span class="token punctuation">&gt;</span></span>{{ `I am item ${i} ` }}<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>li</span><span class="token punctuation">&gt;</span></span>
    88. 

  88.         <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>ul</span><span class="token punctuation">&gt;</span></span>
    89. 

  89.       <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
    90. 

  90.     <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
    91. 

  91.   <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
    92. 

  92. <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>template</span><span class="token punctuation">&gt;</span></span></code></pre></div></div><div class="demo-code-item" style="display:none;"><div class="language-vue extra-class"><pre class="language-vue"><code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>script</span><span class="token punctuation">&gt;</span></span><span class="token script"><span class="token language-javascript">
    93. 

  93. <span class="token keyword">import</span> BScroll <span class="token keyword">from</span> <span class="token string">'@better-scroll/core'</span>
    94. 

  94. <span class="token keyword">import</span> PullDown <span class="token keyword">from</span> <span class="token string">'@better-scroll/pull-down'</span>
    95. 

  95. 

  96. BScroll<span class="token punctuation">.</span><span class="token function">use</span><span class="token punctuation">(</span>PullDown<span class="token punctuation">)</span>
    97. 

  97. 

  98. <span class="token keyword">function</span> <span class="token function">generateData</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    99. 

  99.   <span class="token keyword">const</span> <span class="token constant">BASE</span> <span class="token operator">=</span> <span class="token number">30</span>
    100. 

  100.   <span class="token keyword">const</span> begin <span class="token operator">=</span> <span class="token constant">BASE</span> <span class="token operator">*</span> <span class="token constant">STEP</span>
    101. 

  101.   <span class="token keyword">const</span> end <span class="token operator">=</span> <span class="token constant">BASE</span> <span class="token operator">*</span> <span class="token punctuation">(</span><span class="token constant">STEP</span> <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">)</span>
    102. 

  102.   <span class="token keyword">let</span> ret <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">]</span>
    103. 

  103.   <span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">let</span> i <span class="token operator">=</span> end<span class="token punctuation">;</span> i <span class="token operator">&gt;</span> begin<span class="token punctuation">;</span> i<span class="token operator">--</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    104. 

  104.     ret<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span>i<span class="token punctuation">)</span>
    105. 

  105.   <span class="token punctuation">}</span>
    106. 

  106.   <span class="token keyword">return</span> ret
    107. 

  107. <span class="token punctuation">}</span>
    108. 

  108. 

  109. <span class="token keyword">const</span> <span class="token constant">TIME_BOUNCE</span> <span class="token operator">=</span> <span class="token number">800</span>
    110. 

  110. <span class="token keyword">const</span> <span class="token constant">REQUEST_TIME</span> <span class="token operator">=</span> <span class="token number">1000</span>
    111. 

  111. <span class="token keyword">const</span> <span class="token constant">THRESHOLD</span> <span class="token operator">=</span> <span class="token number">70</span>
    112. 

  112. <span class="token keyword">const</span> <span class="token constant">STOP</span> <span class="token operator">=</span> <span class="token number">56</span>
    113. 

  113. <span class="token keyword">let</span> <span class="token constant">STEP</span> <span class="token operator">=</span> <span class="token number">0</span>
    114. 

  114. 

  115. <span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token punctuation">{</span>
    116. 

  116.   <span class="token function">data</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    117. 

  117.     <span class="token keyword">return</span> <span class="token punctuation">{</span>
    118. 

  118.       <span class="token literal-property property">beforePullDown</span><span class="token operator">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
    119. 

  119.       <span class="token literal-property property">isPullingDown</span><span class="token operator">:</span> <span class="token boolean">false</span><span class="token punctuation">,</span>
    120. 

  120.       <span class="token literal-property property">dataList</span><span class="token operator">:</span> <span class="token function">generateData</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    121. 

  121.     <span class="token punctuation">}</span>
    122. 

  122.   <span class="token punctuation">}</span><span class="token punctuation">,</span>
    123. 

  123.   <span class="token function">mounted</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    124. 

  124.     <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">initBscroll</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    125. 

  125.   <span class="token punctuation">}</span><span class="token punctuation">,</span>
    126. 

  126.   <span class="token literal-property property">methods</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    127. 

  127.     <span class="token function">initBscroll</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    128. 

  128.       <span class="token keyword">this</span><span class="token punctuation">.</span>bscroll <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BScroll</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>$refs<span class="token punctuation">.</span>bsWrapper<span class="token punctuation">,</span> <span class="token punctuation">{</span>
    129. 

  129.         <span class="token literal-property property">scrollY</span><span class="token operator">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
    130. 

  130.         <span class="token literal-property property">bounceTime</span><span class="token operator">:</span> <span class="token constant">TIME_BOUNCE</span><span class="token punctuation">,</span>
    131. 

  131.         <span class="token literal-property property">useTransition</span><span class="token operator">:</span> <span class="token boolean">false</span><span class="token punctuation">,</span>
    132. 

  132.         <span class="token literal-property property">pullDownRefresh</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    133. 

  133.           <span class="token literal-property property">threshold</span><span class="token operator">:</span> <span class="token constant">THRESHOLD</span><span class="token punctuation">,</span>
    134. 

  134.           <span class="token literal-property property">stop</span><span class="token operator">:</span> <span class="token constant">STOP</span>
    135. 

  135.         <span class="token punctuation">}</span>
    136. 

  136.       <span class="token punctuation">}</span><span class="token punctuation">)</span>
    137. 

  137. 

  138.       <span class="token keyword">this</span><span class="token punctuation">.</span>bscroll<span class="token punctuation">.</span><span class="token function">on</span><span class="token punctuation">(</span><span class="token string">'pullingDown'</span><span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>pullingDownHandler<span class="token punctuation">)</span>
    139. 

  139.       <span class="token keyword">this</span><span class="token punctuation">.</span>bscroll<span class="token punctuation">.</span><span class="token function">on</span><span class="token punctuation">(</span><span class="token string">'scroll'</span><span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>scrollHandler<span class="token punctuation">)</span>
    140. 

  140.       <span class="token keyword">this</span><span class="token punctuation">.</span>bscroll<span class="token punctuation">.</span><span class="token function">on</span><span class="token punctuation">(</span><span class="token string">'scrollEnd'</span><span class="token punctuation">,</span> <span class="token parameter">e</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
    141. 

  141.         console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">'scrollEnd'</span><span class="token punctuation">)</span>
    142. 

  142.       <span class="token punctuation">}</span><span class="token punctuation">)</span>
    143. 

  143.     <span class="token punctuation">}</span><span class="token punctuation">,</span>
    144. 

  144.     <span class="token function">scrollHandler</span><span class="token punctuation">(</span><span class="token parameter">pos</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    145. 

  145.       console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span>pos<span class="token punctuation">.</span>y<span class="token punctuation">)</span>
    146. 

  146.     <span class="token punctuation">}</span><span class="token punctuation">,</span>
    147. 

  147.     <span class="token keyword">async</span> <span class="token function">pullingDownHandler</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    148. 

  148.       console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">'trigger pullDown'</span><span class="token punctuation">)</span>
    149. 

  149.       <span class="token keyword">this</span><span class="token punctuation">.</span>beforePullDown <span class="token operator">=</span> <span class="token boolean">false</span>
    150. 

  150.       <span class="token keyword">this</span><span class="token punctuation">.</span>isPullingDown <span class="token operator">=</span> <span class="token boolean">true</span>
    151. 

  151.       <span class="token constant">STEP</span> <span class="token operator">+=</span> <span class="token number">1</span>
    152. 

  152. 

  153.       <span class="token keyword">await</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">requestData</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    154. 

  154. 

  155.       <span class="token keyword">this</span><span class="token punctuation">.</span>isPullingDown <span class="token operator">=</span> <span class="token boolean">false</span>
    156. 

  156.       <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">finishPullDown</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    157. 

  157.     <span class="token punctuation">}</span><span class="token punctuation">,</span>
    158. 

  158.     <span class="token keyword">async</span> <span class="token function">finishPullDown</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    159. 

  159.       <span class="token keyword">this</span><span class="token punctuation">.</span>bscroll<span class="token punctuation">.</span><span class="token function">finishPullDown</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    160. 

  160.       <span class="token function">setTimeout</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
    161. 

  161.         <span class="token keyword">this</span><span class="token punctuation">.</span>beforePullDown <span class="token operator">=</span> <span class="token boolean">true</span>
    162. 

  162.         <span class="token keyword">this</span><span class="token punctuation">.</span>bscroll<span class="token punctuation">.</span><span class="token function">refresh</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    163. 

  163.       <span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token constant">TIME_BOUNCE</span> <span class="token operator">+</span> <span class="token number">100</span><span class="token punctuation">)</span>
    164. 

  164.     <span class="token punctuation">}</span><span class="token punctuation">,</span>
    165. 

  165.     <span class="token keyword">async</span> <span class="token function">requestData</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    166. 

  166.       <span class="token keyword">try</span> <span class="token punctuation">{</span>
    167. 

  167.         <span class="token keyword">const</span> newData <span class="token operator">=</span> <span class="token keyword">await</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">ajaxGet</span><span class="token punctuation">(</span><span class="token comment">/* url */</span><span class="token punctuation">)</span>
    168. 

  168.         <span class="token keyword">this</span><span class="token punctuation">.</span>dataList <span class="token operator">=</span> newData<span class="token punctuation">.</span><span class="token function">concat</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>dataList<span class="token punctuation">)</span>
    169. 

  169.       <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span>err<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    170. 

  170.         <span class="token comment">// handle err</span>
    171. 

  171.         console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span>err<span class="token punctuation">)</span>
    172. 

  172.       <span class="token punctuation">}</span>
    173. 

  173.     <span class="token punctuation">}</span><span class="token punctuation">,</span>
    174. 

  174.     <span class="token function">ajaxGet</span><span class="token punctuation">(</span><span class="token comment">/* url */</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    175. 

  175.       <span class="token keyword">return</span> <span class="token keyword">new</span> <span class="token class-name">Promise</span><span class="token punctuation">(</span><span class="token parameter">resolve</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
    176. 

  176.         <span class="token function">setTimeout</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
    177. 

  177.           <span class="token keyword">const</span> dataList <span class="token operator">=</span> <span class="token function">generateData</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    178. 

  178.           <span class="token function">resolve</span><span class="token punctuation">(</span>dataList<span class="token punctuation">)</span>
    179. 

  179.         <span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token constant">REQUEST_TIME</span><span class="token punctuation">)</span>
    180. 

  180.       <span class="token punctuation">}</span><span class="token punctuation">)</span>
    181. 

  181.     <span class="token punctuation">}</span>
    182. 

  182.   <span class="token punctuation">}</span>
    183. 

  183. <span class="token punctuation">}</span>
    184. 

  184. </span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>script</span><span class="token punctuation">&gt;</span></span></code></pre></div></div><div class="demo-code-item" style="display:none;"><div class="language-styl extra-class"><pre class="language-styl"><code><span class="token selector">&lt;style lang=&quot;stylus&quot; scoped&gt;
    185. 

  185. .pulldown</span>
    186. 

  186.   <span class="token property-declaration"><span class="token property">height</span> <span class="token number">100</span><span class="token unit">%</span></span>
    187. 

  187. 

  188. <span class="token selector">.pulldown-bswrapper</span>
    189. 

  189.   <span class="token property-declaration"><span class="token property">position</span> relative</span>
    190. 

  190.   <span class="token property-declaration"><span class="token property">height</span> <span class="token number">100</span><span class="token unit">%</span></span>
    191. 

  191.   <span class="token property-declaration"><span class="token property">padding</span> <span class="token number">0</span> <span class="token number">10</span><span class="token unit">px</span></span>
    192. 

  192.   <span class="token property-declaration"><span class="token property">border</span> <span class="token number">1</span><span class="token unit">px</span> solid <span class="token hexcode">#ccc</span></span>
    193. 

  193.   <span class="token property-declaration"><span class="token property">overflow</span> hidden</span>
    194. 

  194. 

  195. <span class="token selector">.pulldown-list</span>
    196. 

  196.   <span class="token property-declaration"><span class="token property">padding</span> <span class="token number">0</span></span>
    197. 

  197. 

  198. <span class="token selector">.pulldown-list-item</span>
    199. 

  199.   <span class="token property-declaration"><span class="token property">padding</span> <span class="token number">10</span><span class="token unit">px</span> <span class="token number">0</span></span>
    200. 

  200.   <span class="token property-declaration"><span class="token property">list-style</span> none</span>
    201. 

  201.   <span class="token property-declaration"><span class="token property">border-bottom</span> <span class="token number">1</span><span class="token unit">px</span> solid <span class="token hexcode">#ccc</span></span>
    202. 

  202. 

  203. <span class="token selector">.pulldown-wrapper</span>
    204. 

  204.   <span class="token property-declaration"><span class="token property">position</span> absolute</span>
    205. 

  205.   <span class="token property-declaration"><span class="token property">width</span> <span class="token number">100</span><span class="token unit">%</span></span>
    206. 

  206.   <span class="token property-declaration"><span class="token property">padding</span> <span class="token number">20</span><span class="token unit">px</span></span>
    207. 

  207.   <span class="token property-declaration"><span class="token property">box-sizing</span> border-box</span>
    208. 

  208.   <span class="token property-declaration"><span class="token property">transform</span> <span class="token func"><span class="token function">translateY</span><span class="token punctuation">(</span><span class="token number">-100</span><span class="token unit">%</span><span class="token punctuation">)</span> <span class="token func"><span class="token function">translateZ</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span></span></span></span>
    209. 

  209.   <span class="token property-declaration"><span class="token property">text-align</span> center</span>
    210. 

  210.   <span class="token property-declaration"><span class="token property">color</span> <span class="token hexcode">#999</span></span>
    211. 

  211. &lt;/style&gt;</code></pre></div></div> <i class="demo-code-content-copy"><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="#ccc"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 5H6a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2v-1M8 5a2 2 0 002 2h2a2 2 0 002-2M8 5a2 2 0 012-2h2a2 2 0 012 2m0 0h2a2 2 0 012 2v3m2 4H10m0 0l3-3m-3 3l3 3"></path></svg></i> <!----></div></div> <div class="demo-main"><div class="demo-component-wrap"></div></div></div> <ul><li><strong>Sina-Weibo <span class="badge tip" style="vertical-align:top;" data-v-15b7b770>2.4.0</span></strong></li></ul> <div class="demo-wrap"><div class="demo-nav"><i class="demo-nav-btn icon-code"><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="#666"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10 20l4-16m4 4l4 4-4 4M6 16l-4-4 4-4"></path></svg></i> <div class="v-popover"><div class="trigger" style="display:inline-block;"><i class="demo-nav-btn icon-qrcode"><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="#666"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 4v1m6 11h2m-6 0h-2v4m0-11v3m0 0h.01M12 12h4.01M16 20h4M4 12h4m12 0h.01M5 8h2a1 1 0 001-1V5a1 1 0 00-1-1H5a1 1 0 00-1 1v2a1 1 0 001 1zm12 0h2a1 1 0 001-1V5a1 1 0 00-1-1h-2a1 1 0 00-1 1v2a1 1 0 001 1zM5 20h2a1 1 0 001-1v-2a1 1 0 00-1-1H5a1 1 0 00-1 1v2a1 1 0 001 1z"></path></svg></i> </div> <div id="popover_wltxvhmh2w" aria-hidden="true" tabindex="0" class="tooltip popover vue-popover-theme" style="visibility:hidden;"><div class="wrapper"><div class="tooltip-inner popover-inner" style="position:relative;"><div><div></div></div> <div tabindex="-1" class="resize-observer" data-v-8859cc6c></div></div> <div class="tooltip-arrow popover-arrow"></div></div></div></div> <i class="demo-nav-btn icon-preview"><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="#666"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9.75 17L9 20l-1 1h8l-1-1-.75-3M3 13h18M5 17h14a2 2 0 002-2V5a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"></path></svg></i></div> <div class="demo-code" style="display:none;"><div class="demo-code-nav"><button class="demo-code-btn active">Template</button><button class="demo-code-btn">Script</button><button class="demo-code-btn">Style</button></div> <div class="demo-code-content"><div class="demo-code-item" style="display:;"><div class="language-vue extra-class"><pre class="language-vue"><code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>template</span><span class="token punctuation">&gt;</span></span>
    212. 

  212.   <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>pulldown-sina<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    213. 

  213.     <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span>
    214. 

  214.       <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>pulldown-bswrapper<span class="token punctuation">&quot;</span></span>
    215. 

  215.       <span class="token attr-name">ref</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>bsWrapper<span class="token punctuation">&quot;</span></span>
    216. 

  216.     <span class="token punctuation">&gt;</span></span>
    217. 

  217.       <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>pulldown-scroller<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    218. 

  218.         <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>pulldown-wrapper<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    219. 

  219.           <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">v-html</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>tipText<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
    220. 

  220.         <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
    221. 

  221.         <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>ul</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>pulldown-list<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
    222. 

  222.           <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>li</span>
    223. 

  223.             <span class="token attr-name">:key</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>i<span class="token punctuation">&quot;</span></span>
    224. 

  224.             <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>pulldown-list-item<span class="token punctuation">&quot;</span></span>
    225. 

  225.             <span class="token attr-name">v-for</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>i of dataList<span class="token punctuation">&quot;</span></span>
    226. 

  226.           <span class="token punctuation">&gt;</span></span>{{ `I am item ${i} ` }}<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>li</span><span class="token punctuation">&gt;</span></span>
    227. 

  227.         <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>ul</span><span class="token punctuation">&gt;</span></span>
    228. 

  228.       <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
    229. 

  229.     <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
    230. 

  230.   <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
    231. 

  231. <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>template</span><span class="token punctuation">&gt;</span></span></code></pre></div></div><div class="demo-code-item" style="display:none;"><div class="language-vue extra-class"><pre class="language-vue"><code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>script</span><span class="token punctuation">&gt;</span></span><span class="token script"><span class="token language-javascript">
    232. 

  232. <span class="token keyword">import</span> BScroll <span class="token keyword">from</span> <span class="token string">'@better-scroll/core'</span>
    233. 

  233. <span class="token keyword">import</span> PullDown <span class="token keyword">from</span> <span class="token string">'@better-scroll/pull-down'</span>
    234. 

  234. 

  235. BScroll<span class="token punctuation">.</span><span class="token function">use</span><span class="token punctuation">(</span>PullDown<span class="token punctuation">)</span>
    236. 

  236. 

  237. <span class="token keyword">function</span> <span class="token function">generateData</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    238. 

  238.   <span class="token keyword">const</span> <span class="token constant">BASE</span> <span class="token operator">=</span> <span class="token number">30</span>
    239. 

  239.   <span class="token keyword">const</span> begin <span class="token operator">=</span> <span class="token constant">BASE</span> <span class="token operator">*</span> <span class="token constant">STEP</span>
    240. 

  240.   <span class="token keyword">const</span> end <span class="token operator">=</span> <span class="token constant">BASE</span> <span class="token operator">*</span> <span class="token punctuation">(</span><span class="token constant">STEP</span> <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">)</span>
    241. 

  241.   <span class="token keyword">let</span> ret <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">]</span>
    242. 

  242.   <span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">let</span> i <span class="token operator">=</span> end<span class="token punctuation">;</span> i <span class="token operator">&gt;</span> begin<span class="token punctuation">;</span> i<span class="token operator">--</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    243. 

  243.     ret<span class="token punctuation">.</span><span class="token function">push</span><span class="token punctuation">(</span>i<span class="token punctuation">)</span>
    244. 

  244.   <span class="token punctuation">}</span>
    245. 

  245.   <span class="token keyword">return</span> ret
    246. 

  246. <span class="token punctuation">}</span>
    247. 

  247. 

  248. <span class="token comment">// pulldownRefresh state</span>
    249. 

  249. <span class="token keyword">const</span> <span class="token constant">PHASE</span> <span class="token operator">=</span> <span class="token punctuation">{</span>
    250. 

  250.   <span class="token literal-property property">moving</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    251. 

  251.     <span class="token literal-property property">enter</span><span class="token operator">:</span> <span class="token string">'enter'</span><span class="token punctuation">,</span>
    252. 

  252.     <span class="token literal-property property">leave</span><span class="token operator">:</span> <span class="token string">'leave'</span>
    253. 

  253.   <span class="token punctuation">}</span><span class="token punctuation">,</span>
    254. 

  254.   <span class="token literal-property property">fetching</span><span class="token operator">:</span> <span class="token string">'fetching'</span><span class="token punctuation">,</span>
    255. 

  255.   <span class="token literal-property property">succeed</span><span class="token operator">:</span> <span class="token string">'succeed'</span>
    256. 

  256. <span class="token punctuation">}</span>
    257. 

  257. <span class="token keyword">const</span> <span class="token constant">TIME_BOUNCE</span> <span class="token operator">=</span> <span class="token number">800</span>
    258. 

  258. <span class="token keyword">const</span> <span class="token constant">REQUEST_TIME</span> <span class="token operator">=</span> <span class="token number">2000</span>
    259. 

  259. <span class="token keyword">const</span> <span class="token constant">THRESHOLD</span> <span class="token operator">=</span> <span class="token number">70</span>
    260. 

  260. <span class="token keyword">const</span> <span class="token constant">STOP</span> <span class="token operator">=</span> <span class="token number">56</span>
    261. 

  261. <span class="token keyword">let</span> <span class="token constant">STEP</span> <span class="token operator">=</span> <span class="token number">0</span>
    262. 

  262. <span class="token keyword">const</span> <span class="token constant">ARROW_BOTTOM</span> <span class="token operator">=</span> <span class="token string">'&lt;svg width=&quot;16&quot; height=&quot;16&quot; viewBox=&quot;0 0 512 512&quot;&gt;&lt;path fill=&quot;currentColor&quot; d=&quot;M367.997 338.75l-95.998 95.997V17.503h-32v417.242l-95.996-95.995l-22.627 22.627L256 496l134.624-134.623l-22.627-22.627z&quot;&gt;&lt;/path&gt;&lt;/svg&gt;'</span>
    263. 

  263. <span class="token keyword">const</span> <span class="token constant">ARROW_UP</span> <span class="token operator">=</span> <span class="token string">'&lt;svg width=&quot;16&quot; height=&quot;16&quot; viewBox=&quot;0 0 512 512&quot;&gt;&lt;path fill=&quot;currentColor&quot; d=&quot;M390.624 150.625L256 16L121.376 150.625l22.628 22.627l95.997-95.998v417.982h32V77.257l95.995 95.995l22.628-22.627z&quot;&gt;&lt;/path&gt;&lt;/svg&gt;'</span>
    264. 

  264. 

  265. <span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token punctuation">{</span>
    266. 

  266.   <span class="token function">data</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    267. 

  267.     <span class="token keyword">return</span> <span class="token punctuation">{</span>
    268. 

  268.       <span class="token literal-property property">tipText</span><span class="token operator">:</span> <span class="token string">''</span><span class="token punctuation">,</span>
    269. 

  269.       <span class="token literal-property property">isPullingDown</span><span class="token operator">:</span> <span class="token boolean">false</span><span class="token punctuation">,</span>
    270. 

  270.       <span class="token literal-property property">dataList</span><span class="token operator">:</span> <span class="token function">generateData</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    271. 

  271.     <span class="token punctuation">}</span>
    272. 

  272.   <span class="token punctuation">}</span><span class="token punctuation">,</span>
    273. 

  273.   <span class="token function">mounted</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    274. 

  274.     <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">initBscroll</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    275. 

  275.   <span class="token punctuation">}</span><span class="token punctuation">,</span>
    276. 

  276.   <span class="token literal-property property">methods</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    277. 

  277.     <span class="token function">initBscroll</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    278. 

  278.       <span class="token keyword">this</span><span class="token punctuation">.</span>bscroll <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BScroll</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>$refs<span class="token punctuation">.</span>bsWrapper<span class="token punctuation">,</span> <span class="token punctuation">{</span>
    279. 

  279.         <span class="token literal-property property">scrollY</span><span class="token operator">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
    280. 

  280.         <span class="token literal-property property">bounceTime</span><span class="token operator">:</span> <span class="token constant">TIME_BOUNCE</span><span class="token punctuation">,</span>
    281. 

  281.         <span class="token literal-property property">useTransition</span><span class="token operator">:</span> <span class="token boolean">false</span><span class="token punctuation">,</span>
    282. 

  282.         <span class="token literal-property property">pullDownRefresh</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    283. 

  283.           <span class="token literal-property property">threshold</span><span class="token operator">:</span> <span class="token constant">THRESHOLD</span><span class="token punctuation">,</span>
    284. 

  284.           <span class="token literal-property property">stop</span><span class="token operator">:</span> <span class="token constant">STOP</span>
    285. 

  285.         <span class="token punctuation">}</span>
    286. 

  286.       <span class="token punctuation">}</span><span class="token punctuation">)</span>
    287. 

  287. 

  288.       <span class="token keyword">this</span><span class="token punctuation">.</span>bscroll<span class="token punctuation">.</span><span class="token function">on</span><span class="token punctuation">(</span><span class="token string">'pullingDown'</span><span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>pullingDownHandler<span class="token punctuation">)</span>
    289. 

  289.       <span class="token keyword">this</span><span class="token punctuation">.</span>bscroll<span class="token punctuation">.</span><span class="token function">on</span><span class="token punctuation">(</span><span class="token string">'scrollEnd'</span><span class="token punctuation">,</span> <span class="token parameter">e</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
    290. 

  290.         console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">'scrollEnd'</span><span class="token punctuation">)</span>
    291. 

  291.       <span class="token punctuation">}</span><span class="token punctuation">)</span>
    292. 

  292.       <span class="token comment">// v2.4.0 supported</span>
    293. 

  293.       <span class="token keyword">this</span><span class="token punctuation">.</span>bscroll<span class="token punctuation">.</span><span class="token function">on</span><span class="token punctuation">(</span><span class="token string">'enterThreshold'</span><span class="token punctuation">,</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
    294. 

  294.         <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">setTipText</span><span class="token punctuation">(</span><span class="token constant">PHASE</span><span class="token punctuation">.</span>moving<span class="token punctuation">.</span>enter<span class="token punctuation">)</span>
    295. 

  295.       <span class="token punctuation">}</span><span class="token punctuation">)</span>
    296. 

  296.       <span class="token keyword">this</span><span class="token punctuation">.</span>bscroll<span class="token punctuation">.</span><span class="token function">on</span><span class="token punctuation">(</span><span class="token string">'leaveThreshold'</span><span class="token punctuation">,</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
    297. 

  297.         <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">setTipText</span><span class="token punctuation">(</span><span class="token constant">PHASE</span><span class="token punctuation">.</span>moving<span class="token punctuation">.</span>leave<span class="token punctuation">)</span>
    298. 

  298.       <span class="token punctuation">}</span><span class="token punctuation">)</span>
    299. 

  299.     <span class="token punctuation">}</span><span class="token punctuation">,</span>
    300. 

  300.     <span class="token keyword">async</span> <span class="token function">pullingDownHandler</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    301. 

  301.       <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">setTipText</span><span class="token punctuation">(</span><span class="token constant">PHASE</span><span class="token punctuation">.</span>fetching<span class="token punctuation">)</span>
    302. 

  302.       <span class="token constant">STEP</span> <span class="token operator">+=</span> <span class="token number">1</span>
    303. 

  303.       <span class="token keyword">await</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getData</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    304. 

  304. 

  305.       <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">setTipText</span><span class="token punctuation">(</span><span class="token constant">PHASE</span><span class="token punctuation">.</span>succeed<span class="token punctuation">)</span>
    306. 

  306.       <span class="token comment">// tell BetterScroll to finish pull down</span>
    307. 

  307.       <span class="token keyword">this</span><span class="token punctuation">.</span>bscroll<span class="token punctuation">.</span><span class="token function">finishPullDown</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    308. 

  308.       <span class="token comment">// waiting for BetterScroll's bounceAnimation then refresh size</span>
    309. 

  309.       <span class="token function">setTimeout</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
    310. 

  310.         <span class="token keyword">this</span><span class="token punctuation">.</span>bscroll<span class="token punctuation">.</span><span class="token function">refresh</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    311. 

  311.       <span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token constant">TIME_BOUNCE</span> <span class="token operator">+</span> <span class="token number">50</span><span class="token punctuation">)</span>
    312. 

  312.     <span class="token punctuation">}</span><span class="token punctuation">,</span>
    313. 

  313.     <span class="token keyword">async</span> <span class="token function">getData</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    314. 

  314.       <span class="token keyword">const</span> newData <span class="token operator">=</span> <span class="token keyword">await</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">mockFetchData</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    315. 

  315.       <span class="token keyword">this</span><span class="token punctuation">.</span>dataList <span class="token operator">=</span> newData<span class="token punctuation">.</span><span class="token function">concat</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>dataList<span class="token punctuation">)</span>
    316. 

  316.     <span class="token punctuation">}</span><span class="token punctuation">,</span>
    317. 

  317.     <span class="token function">mockFetchData</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    318. 

  318.       <span class="token keyword">return</span> <span class="token keyword">new</span> <span class="token class-name">Promise</span><span class="token punctuation">(</span><span class="token parameter">resolve</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
    319. 

  319.         <span class="token function">setTimeout</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
    320. 

  320.           <span class="token keyword">const</span> dataList <span class="token operator">=</span> <span class="token function">generateData</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    321. 

  321.           <span class="token function">resolve</span><span class="token punctuation">(</span>dataList<span class="token punctuation">)</span>
    322. 

  322.         <span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token constant">REQUEST_TIME</span><span class="token punctuation">)</span>
    323. 

  323.       <span class="token punctuation">}</span><span class="token punctuation">)</span>
    324. 

  324.     <span class="token punctuation">}</span><span class="token punctuation">,</span>
    325. 

  325.     <span class="token function">setTipText</span><span class="token punctuation">(</span><span class="token parameter">phase <span class="token operator">=</span> <span class="token constant">PHASE</span><span class="token punctuation">.</span>default</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    326. 

  326.       <span class="token keyword">const</span> <span class="token constant">TEXTS_MAP</span> <span class="token operator">=</span> <span class="token punctuation">{</span>
    327. 

  327.         <span class="token string-property property">'enter'</span><span class="token operator">:</span> <span class="token template-string"><span class="token template-punctuation string">`</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span><span class="token constant">ARROW_BOTTOM</span><span class="token interpolation-punctuation punctuation">}</span></span><span class="token string"> Pull down</span><span class="token template-punctuation string">`</span></span><span class="token punctuation">,</span>
    328. 

  328.         <span class="token string-property property">'leave'</span><span class="token operator">:</span> <span class="token template-string"><span class="token template-punctuation string">`</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span><span class="token constant">ARROW_UP</span><span class="token interpolation-punctuation punctuation">}</span></span><span class="token string"> Release</span><span class="token template-punctuation string">`</span></span><span class="token punctuation">,</span>
    329. 

  329.         <span class="token string-property property">'fetching'</span><span class="token operator">:</span> <span class="token string">'Loading...'</span><span class="token punctuation">,</span>
    330. 

  330.         <span class="token string-property property">'succeed'</span><span class="token operator">:</span> <span class="token string">'Refresh succeed'</span>
    331. 

  331.       <span class="token punctuation">}</span>
    332. 

  332.       <span class="token keyword">this</span><span class="token punctuation">.</span>tipText <span class="token operator">=</span> <span class="token constant">TEXTS_MAP</span><span class="token punctuation">[</span>phase<span class="token punctuation">]</span>
    333. 

  333.     <span class="token punctuation">}</span>
    334. 

  334.   <span class="token punctuation">}</span>
    335. 

  335. <span class="token punctuation">}</span>
    336. 

  336. </span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>script</span><span class="token punctuation">&gt;</span></span></code></pre></div></div><div class="demo-code-item" style="display:none;"><div class="language-styl extra-class"><pre class="language-styl"><code><span class="token selector">&lt;style lang=&quot;stylus&quot; scoped&gt;
    337. 

  337. .pulldown-sina</span>
    338. 

  338.   <span class="token property-declaration"><span class="token property">height</span> <span class="token number">100</span><span class="token unit">%</span></span>
    339. 

  339. 

  340. <span class="token selector">.pulldown-bswrapper</span>
    341. 

  341.   <span class="token property-declaration"><span class="token property">position</span> relative</span>
    342. 

  342.   <span class="token property-declaration"><span class="token property">height</span> <span class="token number">100</span><span class="token unit">%</span></span>
    343. 

  343.   <span class="token property-declaration"><span class="token property">padding</span> <span class="token number">0</span> <span class="token number">10</span><span class="token unit">px</span></span>
    344. 

  344.   <span class="token property-declaration"><span class="token property">border</span> <span class="token number">1</span><span class="token unit">px</span> solid <span class="token hexcode">#ccc</span></span>
    345. 

  345.   <span class="token property-declaration"><span class="token property">overflow</span> hidden</span>
    346. 

  346. 

  347. <span class="token selector">.pulldown-list</span>
    348. 

  348.   <span class="token property-declaration"><span class="token property">padding</span> <span class="token number">0</span></span>
    349. 

  349. 

  350. <span class="token selector">.pulldown-list-item</span>
    351. 

  351.   <span class="token property-declaration"><span class="token property">padding</span> <span class="token number">10</span><span class="token unit">px</span> <span class="token number">0</span></span>
    352. 

  352.   <span class="token property-declaration"><span class="token property">list-style</span> none</span>
    353. 

  353.   <span class="token property-declaration"><span class="token property">border-bottom</span> <span class="token number">1</span><span class="token unit">px</span> solid <span class="token hexcode">#ccc</span></span>
    354. 

  354. 

  355. <span class="token selector">.pulldown-wrapper</span>
    356. 

  356.   <span class="token property-declaration"><span class="token property">position</span> absolute</span>
    357. 

  357.   <span class="token property-declaration"><span class="token property">width</span> <span class="token number">100</span><span class="token unit">%</span></span>
    358. 

  358.   <span class="token property-declaration"><span class="token property">padding</span> <span class="token number">20</span><span class="token unit">px</span></span>
    359. 

  359.   <span class="token property-declaration"><span class="token property">box-sizing</span> border-box</span>
    360. 

  360.   <span class="token property-declaration"><span class="token property">transform</span> <span class="token func"><span class="token function">translateY</span><span class="token punctuation">(</span><span class="token number">-100</span><span class="token unit">%</span><span class="token punctuation">)</span> <span class="token func"><span class="token function">translateZ</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span></span></span></span>
    361. 

  361.   <span class="token property-declaration"><span class="token property">text-align</span> center</span>
    362. 

  362.   <span class="token property-declaration"><span class="token property">color</span> <span class="token hexcode">#999</span></span>
    363. 

  363. &lt;/style&gt;</code></pre></div></div> <i class="demo-code-content-copy"><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="#ccc"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 5H6a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2v-1M8 5a2 2 0 002 2h2a2 2 0 002-2M8 5a2 2 0 012-2h2a2 2 0 012 2m0 0h2a2 2 0 012 2v3m2 4H10m0 0l3-3m-3 3l3 3"></path></svg></i> <!----></div></div> <div class="demo-main"><div class="demo-component-wrap"></div></div></div> <p>In order to match the effects of App, in version v2.4.0, pulldown has made some changes and is compatible with previous versions. During a pulldown procedure, there are three internal circulation states, and the states are irreversible. They are as follows:</p> <ol><li><strong>default</strong></li></ol> <p>The initial state.</p> <ol start="2"><li><strong>moving</strong></li></ol> <p>Moving state, this state represents that the user's finger is manipulating BetterScroll, and the finger is keeping in touch. In this state, BetterScroll will dispatch two events.</p> <ul><li><p><strong>enterThreshold</strong></p> <p>Dispatched when BetterScroll scrolls <strong>into</strong> the pulldown threshold area. Inside this event, you can do the logic of texts initialization, such as prompting the user to &quot;pull down to refresh&quot;</p></li> <li><p><strong>leaveThreshold</strong></p> <p>Dispatched when BetterScroll scrolls <strong>out of</strong> the pulldown threshold area. You can prompt the user to &quot;Release finger&quot;</p></li></ul> <ol start="3"><li><strong>fetching</strong></li></ol> <p>Once the finger went away, the pullingDown event is triggered to execute the logic of fetching data</p> <p>The state change can only be <code>default -&gt; moving -&gt; fetching</code> or <code>default -&gt; moving</code>. The latter means that at the moment the user's finger is released, the conditions for triggering the pullingDown event are not met.</p> <h2 id="pulldownrefresh-options"><a href="#pulldownrefresh-options" class="header-anchor">#</a> pullDownRefresh Options</h2> <h3 id="threshold"><a href="#threshold" class="header-anchor">#</a> threshold</h3> <ul><li><strong>Type</strong>: <code>number</code></li> <li><strong>Default</strong>: <code>90</code></li></ul> <p>Configure the top pull-down distance to determine dispatching <code>pullingDown</code> hooks.</p> <h3 id="stop"><a href="#stop" class="header-anchor">#</a> stop</h3> <ul><li><strong>Type</strong>: <code>number</code></li> <li><strong>Default</strong>: <code>40</code></li></ul> <p>Rebound distance. After BetterScroll dispatches the <code>pullingDown</code> hook, it will immediately execute the rebound animation.</p> <div class="custom-block tip"><p class="custom-block-title">TIP</p> <p>When <code>pullDownRefresh</code> is configured as <code>true</code>, the plugin uses the default plugin option.</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">const</span> bs <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BScroll</span><span class="token punctuation">(</span><span class="token string">'.wrapper'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
    364. 

  364.   <span class="token literal-property property">pullDownRefresh</span><span class="token operator">:</span> <span class="token boolean">true</span>
    365. 

  365. <span class="token punctuation">}</span><span class="token punctuation">)</span>
    366. 

  366. 

  367. <span class="token comment">// equals</span>
    368. 

  368. 

  369. <span class="token keyword">const</span> bs <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BScroll</span><span class="token punctuation">(</span><span class="token string">'.wrapper'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
    370. 

  370.   <span class="token literal-property property">pullDownRefresh</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    371. 

  371.     <span class="token literal-property property">threshold</span><span class="token operator">:</span> <span class="token number">90</span><span class="token punctuation">,</span>
    372. 

  372.     <span class="token literal-property property">stop</span><span class="token operator">:</span> <span class="token number">40</span>
    373. 

  373.   <span class="token punctuation">}</span>
    374. 

  374. <span class="token punctuation">}</span><span class="token punctuation">)</span>
    375. 

  375. </code></pre></div></div> <h2 id="instance-methods"><a href="#instance-methods" class="header-anchor">#</a> Instance Methods</h2> <div class="custom-block tip"><p class="custom-block-title">TIP</p> <p>All methods are proxied to BetterScroll instance, for example:</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">import</span> BScroll <span class="token keyword">from</span> <span class="token string">'@better-scroll/core'</span>
    376. 

  376. <span class="token keyword">import</span> PullDown <span class="token keyword">from</span> <span class="token string">'@better-scroll/pull-down'</span>
    377. 

  377. 

  378. BScroll<span class="token punctuation">.</span><span class="token function">use</span><span class="token punctuation">(</span>PullDown<span class="token punctuation">)</span>
    379. 

  379. 

  380. <span class="token keyword">const</span> bs <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BScroll</span><span class="token punctuation">(</span><span class="token string">'.bs-wrapper'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
    381. 

  381.   <span class="token literal-property property">pullDownRefresh</span><span class="token operator">:</span> <span class="token boolean">true</span>
    382. 

  382. <span class="token punctuation">}</span><span class="token punctuation">)</span>
    383. 

  383. 

  384. bs<span class="token punctuation">.</span><span class="token function">finishPullDown</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    385. 

  385. bs<span class="token punctuation">.</span><span class="token function">openPullDown</span><span class="token punctuation">(</span><span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">)</span>
    386. 

  386. bs<span class="token punctuation">.</span><span class="token function">autoPullDownRefresh</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    387. 

  387. </code></pre></div></div> <h3 id="finishpulldown"><a href="#finishpulldown" class="header-anchor">#</a> <code>finishPullDown()</code></h3> <ul><li><strong>Details</strong>: End the pull-down refresh behavior.</li></ul> <div class="custom-block warning"><p class="custom-block-title">WARNING</p> <p>Every time the <code>pullingDown</code> hook is triggered, you should <strong>actively call</strong> <code>finishPullDown()</code> to tell BetterScroll to be ready for the next pullingDown hook.</p></div> <h3 id="openpulldown-config-pulldownrefreshoptions"><a href="#openpulldown-config-pulldownrefreshoptions" class="header-anchor">#</a> <code>openPullDown(config: PullDownRefreshOptions = {})</code></h3> <ul><li><p><strong>Details</strong>: Turn on the pull-down refresh dynamically.</p></li> <li><p><strong>Arguments</strong>:</p> <ul><li><code>{ PullDownRefreshOptions } config</code>: Modify the option of the pulldown plugin</li> <li><code>PullDownRefreshOptions</code>:</li></ul> <div class="language-typescript extra-class"><pre class="language-typescript"><code><span class="token keyword">export</span> <span class="token keyword">type</span> <span class="token class-name">PullDownRefreshOptions</span> <span class="token operator">=</span> Partial<span class="token operator">&lt;</span>PullDownRefreshConfig<span class="token operator">&gt;</span> <span class="token operator">|</span> <span class="token boolean">true</span>
    388. 

  388. 

  389. <span class="token keyword">export</span> <span class="token keyword">interface</span> <span class="token class-name">PullDownRefreshConfig</span> <span class="token punctuation">{</span>
    390. 

  390.   threshold<span class="token operator">:</span> <span class="token builtin">number</span>
    391. 

  391.   stop<span class="token operator">:</span> <span class="token builtin">number</span>
    392. 

  392. <span class="token punctuation">}</span>
    393. 

  393. </code></pre></div></li></ul> <div class="custom-block warning"><p class="custom-block-title">WARNING</p> <p>The <strong>openPullDown</strong> method should be used with <strong>closePullDown</strong>, because in the process of generating the pulldown plugin, the pull-down refresh action has been automatically monitored.</p></div> <h3 id="closepulldown"><a href="#closepulldown" class="header-anchor">#</a> <code>closePullDown()</code></h3> <ul><li><strong>Details</strong>: Turn off the pull-down refresh dynamically.</li></ul> <h2 id="events"><a href="#events" class="header-anchor">#</a> Events</h2> <h3 id="pullingdown"><a href="#pullingdown" class="header-anchor">#</a> <code>pullingDown</code></h3> <ul><li><strong>Arguments</strong>: None</li> <li><strong>Trigger</strong>: A <code>pullingDown</code> event is fired when the top pull-down distance is greater than the <code>threshold</code> value after touchend.</li></ul> <div class="custom-block danger"><p class="custom-block-title">Note</p> <p>After the pull-down refresh action is detected, the consumption opportunity of the <code>pullingDown</code> hook is only once, so you need to call <code>finishPullDown()</code> to tell BetterScroll to provide the next consumption opportunity of the <code>pullingDown</code> event.</p></div> <h3 id="enterthreshold"><a href="#enterthreshold" class="header-anchor">#</a> <code>enterThreshold</code> <span class="badge tip" style="vertical-align:top;" data-v-15b7b770>2.4.0</span></h3> <ul><li><strong>Arguments</strong>: None</li> <li><strong>Trigger</strong>: when pulldown is in the <strong>moving</strong> state and <strong>enters</strong> threshold area.</li></ul> <h3 id="leavethreshold"><a href="#leavethreshold" class="header-anchor">#</a> <code>leaveThreshold</code> <span class="badge tip" style="vertical-align:top;" data-v-15b7b770>2.4.0</span></h3> <ul><li><strong>Arguments</strong>: None</li> <li><strong>Trigger</strong>: when pulldown is in the <strong>moving</strong> state and <strong>leaves</strong> threshold area.</li></ul></div> <footer class="page-edit"><div class="edit-link"><a href="https://github.com/ustbhuangyi/better-scroll/edit/dev/packages/vuepress-docs/docs/en-US/plugins/pulldown.md" target="_blank" rel="noopener noreferrer">Edit this page on GitHub</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">6/23/2021, 4:25:16 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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  394.       ←
    395. 

  395.       <a href="/docs/en-US/plugins/observe-image.html" class="prev">
    396. 

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    397. 

  397.       </a></span> <span class="next"><a href="/docs/en-US/plugins/pullup.html">
    398. 

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    399. 

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    400. 

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    405.