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// or

<span class="token function">yarn</span> <span class="token function">add</span> @better-scroll/infinity
</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>
<span class="token keyword">import</span> InfinityScroll <span class="token keyword">from</span> <span class="token string">'@better-scroll/infinity'</span>

BScroll<span class="token punctuation">.</span><span class="token function">use</span><span class="token punctuation">(</span>InfinityScroll<span class="token punctuation">)</span>
</code></pre></div><p>Then, To instantiate BetterScroll, you need to pass the related configuration item <code>infinity</code>:</p> <div class="language-typescript extra-class"><pre class="language-typescript"><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>
  scrollY<span class="token operator">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
  infinity<span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token function">fetch</span><span class="token punctuation">(</span>count<span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token comment">// Fetch data that is larger than count, the function is asynchronous, and it needs to return a Promise.。</span>
      <span class="token comment">// After you have successfully fetch the data, you need resolve an array of data (or resolve Promise).</span>
      <span class="token comment">// Each element of the array is list data, which will be rendered when the render method executes。</span>
      <span class="token comment">// If there is no data, you can resolve (false) to tell the infinite scroll list that there is no more data。</span>
    <span class="token punctuation">}</span>
    <span class="token function">render</span><span class="token punctuation">(</span>item<span class="token punctuation">,</span> div<span class="token operator">?</span><span class="token operator">:</span> HTMLElement<span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token comment">// Rendering each element node, item is data from fetch function</span>
      <span class="token comment">// div is an element which is recycled from document or undefined</span>
      <span class="token comment">// The function needs to return to a html element.</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token function">createTombstone</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token comment">// Must return a tombstone DOM node.</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre></div><div class="custom-block danger"><p class="custom-block-title">Note</p> <p><code>fetch</code>, <code>render</code>, <code>createTombstone</code> must be implemented in accordance with the comments as above, otherwise an internal error will be reported.</p> <p>The plugin relies on Promise internally. If the browser does not support it, the Promise Polyfill is required.</p></div> <h2 id="demo"><a href="#demo" class="header-anchor">#</a> Demo</h2> <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_mgkc1f4mqc" 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>
  <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>infinity<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 attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>template<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>li</span> <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>message<span class="token punctuation">&quot;</span></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>infinity-item<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>img</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>infinity-avatar<span class="token punctuation">&quot;</span></span> <span class="token attr-name">width</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>48<span class="token punctuation">&quot;</span></span> <span class="token attr-name">height</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>48<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 attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>infinity-bubble<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>p</span><span class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>p</span><span class="token punctuation">&gt;</span></span>
          <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>img</span> <span class="token attr-name">width</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>300<span class="token punctuation">&quot;</span></span> <span class="token attr-name">height</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>300<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 attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>infinity-meta<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>time</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>infinity-posted-date<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>time</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>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
      <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>li</span><span class="token punctuation">&gt;</span></span>
      <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>li</span> <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>tombstone<span class="token punctuation">&quot;</span></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>infinity-item tombstone<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>img</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>infinity-avatar<span class="token punctuation">&quot;</span></span> <span class="token attr-name">width</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>48<span class="token punctuation">&quot;</span></span> <span class="token attr-name">height</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>48<span class="token punctuation">&quot;</span></span> <span class="token attr-name">:src</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>require('./image/unknown.jpg')<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 attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>infinity-bubble<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>p</span><span class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>p</span><span class="token punctuation">&gt;</span></span>
          <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>p</span><span class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>p</span><span class="token punctuation">&gt;</span></span>
          <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>p</span><span class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>p</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 attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>infinity-meta<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>time</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>infinity-posted-date<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>time</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>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
      <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>li</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>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <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>chat<span class="token punctuation">&quot;</span></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>infinity-timeline<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>ul</span><span class="token punctuation">&gt;</span></span>
      <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>ul</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>
  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span>
<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">
  <span class="token keyword">import</span> BScroll <span class="token keyword">from</span> <span class="token string">'@better-scroll/core'</span>
  <span class="token keyword">import</span> InfinityScroll <span class="token keyword">from</span> <span class="token string">'@better-scroll/infinity'</span>
  <span class="token keyword">import</span> message <span class="token keyword">from</span> <span class="token string">'./data/message.json'</span>

  BScroll<span class="token punctuation">.</span><span class="token function">use</span><span class="token punctuation">(</span>InfinityScroll<span class="token punctuation">)</span>

  <span class="token keyword">const</span> <span class="token constant">NUM_AVATARS</span> <span class="token operator">=</span> <span class="token number">4</span>
  <span class="token keyword">const</span> <span class="token constant">NUM_IMAGES</span> <span class="token operator">=</span> <span class="token number">77</span>
  <span class="token keyword">const</span> <span class="token constant">INIT_TIME</span> <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getTime</span><span class="token punctuation">(</span><span class="token punctuation">)</span>

  <span class="token keyword">function</span> <span class="token function">getItem</span><span class="token punctuation">(</span><span class="token parameter">id</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">function</span> <span class="token function">pickRandom</span><span class="token punctuation">(</span><span class="token parameter">a</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">return</span> a<span class="token punctuation">[</span>Math<span class="token punctuation">.</span><span class="token function">floor</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">random</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">*</span> a<span class="token punctuation">.</span>length<span class="token punctuation">)</span><span class="token punctuation">]</span>
    <span class="token punctuation">}</span>

    <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 keyword">function</span> <span class="token punctuation">(</span><span class="token parameter">resolve</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">let</span> item <span class="token operator">=</span> <span class="token punctuation">{</span>
        <span class="token literal-property property">id</span><span class="token operator">:</span> id<span class="token punctuation">,</span>
        <span class="token literal-property property">avatar</span><span class="token operator">:</span> Math<span class="token punctuation">.</span><span class="token function">floor</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">random</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token constant">NUM_AVATARS</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
        <span class="token literal-property property">self</span><span class="token operator">:</span> Math<span class="token punctuation">.</span><span class="token function">random</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">&lt;</span> <span class="token number">0.1</span><span class="token punctuation">,</span>
        <span class="token literal-property property">image</span><span class="token operator">:</span> Math<span class="token punctuation">.</span><span class="token function">random</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">&lt;</span> <span class="token number">1.0</span> <span class="token operator">/</span> <span class="token number">20</span> <span class="token operator">?</span> Math<span class="token punctuation">.</span><span class="token function">floor</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">random</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token constant">NUM_IMAGES</span><span class="token punctuation">)</span> <span class="token operator">:</span> <span class="token string">''</span><span class="token punctuation">,</span>
        <span class="token literal-property property">time</span><span class="token operator">:</span> <span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span>Math<span class="token punctuation">.</span><span class="token function">floor</span><span class="token punctuation">(</span><span class="token constant">INIT_TIME</span> <span class="token operator">+</span> id <span class="token operator">*</span> <span class="token number">20</span> <span class="token operator">*</span> <span class="token number">1000</span> <span class="token operator">+</span> Math<span class="token punctuation">.</span><span class="token function">random</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token number">20</span> <span class="token operator">*</span> <span class="token number">1000</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
        <span class="token literal-property property">message</span><span class="token operator">:</span> <span class="token function">pickRandom</span><span class="token punctuation">(</span>message<span class="token punctuation">)</span>
      <span class="token punctuation">}</span>
      <span class="token keyword">if</span> <span class="token punctuation">(</span>item<span class="token punctuation">.</span>image <span class="token operator">===</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
        <span class="token function">resolve</span><span class="token punctuation">(</span>item<span class="token punctuation">)</span>
      <span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
        <span class="token keyword">let</span> image <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Image</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
        image<span class="token punctuation">.</span>src <span class="token operator">=</span> <span class="token function">require</span><span class="token punctuation">(</span><span class="token template-string"><span class="token template-punctuation string">`</span><span class="token string">./image/image</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>item<span class="token punctuation">.</span>image<span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">.jpg</span><span class="token template-punctuation string">`</span></span><span class="token punctuation">)</span>
        image<span class="token punctuation">.</span><span class="token function">addEventListener</span><span class="token punctuation">(</span><span class="token string">'load'</span><span class="token punctuation">,</span> <span class="token keyword">function</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
          item<span class="token punctuation">.</span>image <span class="token operator">=</span> image
          <span class="token function">resolve</span><span class="token punctuation">(</span>item<span class="token punctuation">)</span>
        <span class="token punctuation">}</span><span class="token punctuation">)</span>
        image<span class="token punctuation">.</span><span class="token function">addEventListener</span><span class="token punctuation">(</span><span class="token string">'error'</span><span class="token punctuation">,</span> <span class="token keyword">function</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
          item<span class="token punctuation">.</span>image <span class="token operator">=</span> <span class="token string">''</span>
          <span class="token function">resolve</span><span class="token punctuation">(</span>item<span class="token punctuation">)</span>
        <span class="token punctuation">}</span><span class="token punctuation">)</span>
      <span class="token punctuation">}</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>
  <span class="token punctuation">}</span>

  <span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token punctuation">{</span>
    <span class="token literal-property property">name</span><span class="token operator">:</span> <span class="token string">'infinity'</span><span class="token punctuation">,</span>
    <span class="token function">created</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">this</span><span class="token punctuation">.</span>nextItem <span class="token operator">=</span> <span class="token number">0</span>
      <span class="token keyword">this</span><span class="token punctuation">.</span>pageNum <span class="token operator">=</span> <span class="token number">0</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token function">mounted</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">createInfinityScroll</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token literal-property property">methods</span><span class="token operator">:</span> <span class="token punctuation">{</span>
      <span class="token function">createInfinityScroll</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
        <span class="token keyword">this</span><span class="token punctuation">.</span>scroll <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>$refs<span class="token punctuation">.</span>chat<span class="token punctuation">,</span> <span class="token punctuation">{</span>
          <span class="token literal-property property">infinity</span><span class="token operator">:</span> <span class="token punctuation">{</span>
            <span class="token function-variable function">render</span><span class="token operator">:</span> <span class="token punctuation">(</span><span class="token parameter">item<span class="token punctuation">,</span> div</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
              div <span class="token operator">=</span> div <span class="token operator">||</span> <span class="token keyword">this</span><span class="token punctuation">.</span>$refs<span class="token punctuation">.</span>message<span class="token punctuation">.</span><span class="token function">cloneNode</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span>
              div<span class="token punctuation">.</span>dataset<span class="token punctuation">.</span>id <span class="token operator">=</span> item<span class="token punctuation">.</span>id
              div<span class="token punctuation">.</span><span class="token function">querySelector</span><span class="token punctuation">(</span><span class="token string">'.infinity-avatar'</span><span class="token punctuation">)</span><span class="token punctuation">.</span>src <span class="token operator">=</span> <span class="token function">require</span><span class="token punctuation">(</span><span class="token template-string"><span class="token template-punctuation string">`</span><span class="token string">./image/avatar</span><span class="token interpolation"><span class="token interpolation-punctuation punctuation">${</span>item<span class="token punctuation">.</span>avatar<span class="token interpolation-punctuation punctuation">}</span></span><span class="token string">.jpg</span><span class="token template-punctuation string">`</span></span><span class="token punctuation">)</span>
              div<span class="token punctuation">.</span><span class="token function">querySelector</span><span class="token punctuation">(</span><span class="token string">'.infinity-bubble p'</span><span class="token punctuation">)</span><span class="token punctuation">.</span>textContent <span class="token operator">=</span> item<span class="token punctuation">.</span>id <span class="token operator">+</span> <span class="token string">'  '</span> <span class="token operator">+</span> item<span class="token punctuation">.</span>message
              div<span class="token punctuation">.</span><span class="token function">querySelector</span><span class="token punctuation">(</span><span class="token string">'.infinity-bubble .infinity-posted-date'</span><span class="token punctuation">)</span><span class="token punctuation">.</span>textContent <span class="token operator">=</span> item<span class="token punctuation">.</span>time<span class="token punctuation">.</span><span class="token function">toString</span><span class="token punctuation">(</span><span class="token punctuation">)</span>

              <span class="token keyword">let</span> img <span class="token operator">=</span> div<span class="token punctuation">.</span><span class="token function">querySelector</span><span class="token punctuation">(</span><span class="token string">'.infinity-bubble img'</span><span class="token punctuation">)</span>
              <span class="token keyword">if</span> <span class="token punctuation">(</span>item<span class="token punctuation">.</span>image <span class="token operator">!==</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
                img<span class="token punctuation">.</span>style<span class="token punctuation">.</span>display <span class="token operator">=</span> <span class="token string">''</span>
                img<span class="token punctuation">.</span>src <span class="token operator">=</span> item<span class="token punctuation">.</span>image<span class="token punctuation">.</span>src
                img<span class="token punctuation">.</span>width <span class="token operator">=</span> item<span class="token punctuation">.</span>image<span class="token punctuation">.</span>width
                img<span class="token punctuation">.</span>height <span class="token operator">=</span> item<span class="token punctuation">.</span>image<span class="token punctuation">.</span>height
              <span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
                img<span class="token punctuation">.</span>src <span class="token operator">=</span> <span class="token string">''</span>
                img<span class="token punctuation">.</span>style<span class="token punctuation">.</span>display <span class="token operator">=</span> <span class="token string">'none'</span>
              <span class="token punctuation">}</span>

              <span class="token keyword">if</span> <span class="token punctuation">(</span>item<span class="token punctuation">.</span>self<span class="token punctuation">)</span> <span class="token punctuation">{</span>
                div<span class="token punctuation">.</span>classList<span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span><span class="token string">'infinity-from-me'</span><span class="token punctuation">)</span>
              <span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
                div<span class="token punctuation">.</span>classList<span class="token punctuation">.</span><span class="token function">remove</span><span class="token punctuation">(</span><span class="token string">'infinity-from-me'</span><span class="token punctuation">)</span>
              <span class="token punctuation">}</span>
              <span class="token keyword">return</span> div
            <span class="token punctuation">}</span><span class="token punctuation">,</span>
            <span class="token function-variable function">createTombstone</span><span class="token operator">:</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
              <span class="token keyword">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span>$refs<span class="token punctuation">.</span>tombstone<span class="token punctuation">.</span><span class="token function">cloneNode</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span>
            <span class="token punctuation">}</span><span class="token punctuation">,</span>
            <span class="token function-variable function">fetch</span><span class="token operator">:</span> <span class="token punctuation">(</span><span class="token parameter">count</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
              <span class="token comment">// Fetch at least 30 or count more objects for display.</span>
              count <span class="token operator">=</span> Math<span class="token punctuation">.</span><span class="token function">max</span><span class="token punctuation">(</span><span class="token number">30</span><span class="token punctuation">,</span> count<span class="token punctuation">)</span>
              <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 punctuation">(</span><span class="token parameter">resolve<span class="token punctuation">,</span> reject</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
                <span class="token comment">// Assume 50 ms per item.</span>
                <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>
                  <span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token operator">++</span><span class="token keyword">this</span><span class="token punctuation">.</span>pageNum <span class="token operator">&gt;</span> <span class="token number">20</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
                    <span class="token function">resolve</span><span class="token punctuation">(</span><span class="token boolean">false</span><span class="token punctuation">)</span>
                  <span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
                    console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">'pageNum'</span><span class="token punctuation">,</span> <span class="token keyword">this</span><span class="token punctuation">.</span>pageNum<span class="token punctuation">)</span>
                    <span class="token keyword">let</span> items <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">]</span>
                    <span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">let</span> i <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span> i <span class="token operator">&lt;</span> Math<span class="token punctuation">.</span><span class="token function">abs</span><span class="token punctuation">(</span>count<span class="token punctuation">)</span><span class="token punctuation">;</span> i<span class="token operator">++</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
                      items<span class="token punctuation">[</span>i<span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token function">getItem</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>nextItem<span class="token operator">++</span><span class="token punctuation">)</span>
                    <span class="token punctuation">}</span>
                    <span class="token function">resolve</span><span class="token punctuation">(</span>Promise<span class="token punctuation">.</span><span class="token function">all</span><span class="token punctuation">(</span>items<span class="token punctuation">)</span><span class="token punctuation">)</span>
                  <span class="token punctuation">}</span>
                <span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">500</span><span class="token punctuation">)</span>
              <span class="token punctuation">}</span><span class="token punctuation">)</span>
            <span class="token punctuation">}</span>
          <span class="token punctuation">}</span>
        <span class="token punctuation">}</span><span class="token punctuation">)</span>
        <span class="token keyword">this</span><span class="token punctuation">.</span>scroll<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 punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
          console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">'is scrolling'</span><span class="token punctuation">)</span>
        <span class="token punctuation">}</span><span class="token punctuation">)</span>
        <span class="token keyword">this</span><span class="token punctuation">.</span>scroll<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 punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
          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>
        <span class="token punctuation">}</span><span class="token punctuation">)</span>
      <span class="token punctuation">}</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
</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;</span>
  <span class="token selector">.infinity</span>
    <span class="token property-declaration"><span class="token property">height</span><span class="token punctuation">:</span> <span class="token number">100</span><span class="token unit">%</span></span>
    <span class="token selector">.template</span>
      <span class="token property-declaration"><span class="token property">display</span><span class="token punctuation">:</span> none</span>

  <span class="token selector">.infinity-timeline</span>
    <span class="token property-declaration"><span class="token property">position</span><span class="token punctuation">:</span> relative</span>
    <span class="token property-declaration"><span class="token property">height</span><span class="token punctuation">:</span> <span class="token number">100</span><span class="token unit">%</span></span>
    <span class="token property-declaration"><span class="token property">padding</span><span class="token punctuation">:</span> <span class="token number">0</span> <span class="token number">10</span><span class="token unit">px</span></span>
    <span class="token property-declaration"><span class="token property">border</span><span class="token punctuation">:</span> <span class="token number">1</span><span class="token unit">px</span> solid <span class="token hexcode">#ccc</span></span>
    <span class="token property-declaration"><span class="token property">overflow</span><span class="token punctuation">:</span> hidden</span>
    <span class="token property-declaration"><span class="token property">will-change</span><span class="token punctuation">:</span> transform</span>
    <span class="token property-declaration"><span class="token property">background-color</span><span class="token punctuation">:</span> <span class="token hexcode">#efeff5</span></span>

  <span class="token selector">.infinity-timeline &gt; ul</span>
    <span class="token property-declaration"><span class="token property">position</span><span class="token punctuation">:</span> relative</span>
    <span class="token property-declaration"><span class="token property">-webkit-backface-visibility</span><span class="token punctuation">:</span> hidden</span>
    <span class="token property-declaration"><span class="token property">-webkit-transform-style</span><span class="token punctuation">:</span> flat</span>

  <span class="token selector">.infinity-item</span>
    <span class="token property-declaration"><span class="token property">display</span><span class="token punctuation">:</span> flex</span>
    <span class="token property-declaration"><span class="token property">left</span><span class="token punctuation">:</span> <span class="token number">0</span></span>
    <span class="token property-declaration"><span class="token property">padding</span><span class="token punctuation">:</span> <span class="token number">10</span><span class="token unit">px</span> <span class="token number">0</span></span>
    <span class="token property-declaration"><span class="token property">width</span><span class="token punctuation">:</span> <span class="token number">100</span><span class="token unit">%</span></span>
    <span class="token property-declaration"><span class="token property">contain</span><span class="token punctuation">:</span> layout</span>
    <span class="token property-declaration"><span class="token property">will-change</span><span class="token punctuation">:</span> transform</span>
    <span class="token property-declaration"><span class="token property">list-style</span><span class="token punctuation">:</span> none</span>
  
  <span class="token selector">.infinity-avatar</span>
    <span class="token property-declaration"><span class="token property">border-radius</span><span class="token punctuation">:</span> <span class="token number">500</span><span class="token unit">px</span></span>
    <span class="token property-declaration"><span class="token property">margin-left</span><span class="token punctuation">:</span> <span class="token number">20</span><span class="token unit">px</span></span>
    <span class="token property-declaration"><span class="token property">margin-right</span><span class="token punctuation">:</span> <span class="token number">6</span><span class="token unit">px</span></span>
    <span class="token property-declaration"><span class="token property">min-width</span><span class="token punctuation">:</span> <span class="token number">48</span><span class="token unit">px</span></span>

  <span class="token selector">.infinity-item</span>
    <span class="token selector">p</span>
      <span class="token property-declaration"><span class="token property">margin</span><span class="token punctuation">:</span> <span class="token number">0</span></span>
      <span class="token property-declaration"><span class="token property">word-wrap</span><span class="token punctuation">:</span> break-word</span>
      <span class="token property-declaration"><span class="token property">font-size</span><span class="token punctuation">:</span> <span class="token number">13</span><span class="token unit">px</span></span>

  <span class="token selector">.infinity-item.tombstone</span>
    <span class="token selector">p</span>
      <span class="token property-declaration"><span class="token property">width</span><span class="token punctuation">:</span> <span class="token number">100</span><span class="token unit">%</span></span>
      <span class="token property-declaration"><span class="token property">height</span><span class="token punctuation">:</span> <span class="token number">0.5</span><span class="token unit">em</span></span>
      <span class="token property-declaration"><span class="token property">background-color</span><span class="token punctuation">:</span> <span class="token hexcode">#ccc</span></span>
      <span class="token property-declaration"><span class="token property">margin</span><span class="token punctuation">:</span> <span class="token number">0.5</span><span class="token unit">em</span> <span class="token number">0</span></span>

  <span class="token selector">.infinity-bubble img </span>
    <span class="token property-declaration"><span class="token property">max-width</span><span class="token punctuation">:</span> <span class="token number">100</span><span class="token unit">%</span></span>
    <span class="token property-declaration"><span class="token property">height</span><span class="token punctuation">:</span> auto</span>

  <span class="token selector">.infinity-bubble </span>
    <span class="token property-declaration"><span class="token property">padding</span><span class="token punctuation">:</span> <span class="token number">7</span><span class="token unit">px</span> <span class="token number">10</span><span class="token unit">px</span></span>
    <span class="token property-declaration"><span class="token property">color</span><span class="token punctuation">:</span> <span class="token hexcode">#333</span></span>
    <span class="token property-declaration"><span class="token property">background</span><span class="token punctuation">:</span> <span class="token hexcode">#fff</span></span>
    <span class="token comment">/*box-shadow: 0 3px 2px rgba(0, 0, 0, 0.1)*/</span>
    <span class="token property-declaration"><span class="token property">position</span><span class="token punctuation">:</span> relative</span>
    <span class="token property-declaration"><span class="token property">max-width</span><span class="token punctuation">:</span> <span class="token number">420</span><span class="token unit">px</span></span>
    <span class="token property-declaration"><span class="token property">min-width</span><span class="token punctuation">:</span> <span class="token number">80</span><span class="token unit">px</span></span>
    <span class="token property-declaration"><span class="token property">margin</span><span class="token punctuation">:</span> <span class="token number">0</span> <span class="token number">5</span><span class="token unit">px</span></span>

  <span class="token selector">.infinity-bubble::before </span>
    <span class="token property-declaration"><span class="token property">content</span><span class="token punctuation">:</span> <span class="token string">''</span></span>
    <span class="token property-declaration"><span class="token property">border-style</span><span class="token punctuation">:</span> solid</span>
    <span class="token property-declaration"><span class="token property">border-width</span><span class="token punctuation">:</span> <span class="token number">0</span> <span class="token number">10</span><span class="token unit">px</span> <span class="token number">10</span><span class="token unit">px</span> <span class="token number">0</span></span>
    <span class="token property-declaration"><span class="token property">border-color</span><span class="token punctuation">:</span> <span class="token color">transparent</span> <span class="token hexcode">#fff</span> <span class="token color">transparent</span> <span class="token color">transparent</span></span>
    <span class="token property-declaration"><span class="token property">position</span><span class="token punctuation">:</span> absolute</span>
    <span class="token property-declaration"><span class="token property">top</span><span class="token punctuation">:</span> <span class="token number">0</span></span>
    <span class="token property-declaration"><span class="token property">left</span><span class="token punctuation">:</span> <span class="token number">-10</span><span class="token unit">px</span></span>

  <span class="token selector">.infinity-meta </span>
    <span class="token property-declaration"><span class="token property">font-size</span><span class="token punctuation">:</span> <span class="token number">0.8</span><span class="token unit">rem</span></span>
    <span class="token property-declaration"><span class="token property">color</span><span class="token punctuation">:</span> <span class="token hexcode">#999</span></span>
    <span class="token property-declaration"><span class="token property">margin-top</span><span class="token punctuation">:</span> <span class="token number">3</span><span class="token unit">px</span></span>

  <span class="token selector">.infinity-from-me </span>
    <span class="token property-declaration"><span class="token property">justify-content</span><span class="token punctuation">:</span> flex-end</span>

  <span class="token selector">.infinity-from-me .infinity-avatar </span>
    <span class="token property-declaration"><span class="token property">order</span><span class="token punctuation">:</span> <span class="token number">1</span></span>
    <span class="token property-declaration"><span class="token property">margin-left</span><span class="token punctuation">:</span> <span class="token number">6</span><span class="token unit">px</span></span>
    <span class="token property-declaration"><span class="token property">margin-right</span><span class="token punctuation">:</span> <span class="token number">20</span><span class="token unit">px</span></span>

  <span class="token selector">.infinity-from-me .infinity-bubble </span>
    <span class="token property-declaration"><span class="token property">background</span><span class="token punctuation">:</span> <span class="token hexcode">#F9D7FF</span></span>

  <span class="token selector">.infinity-from-me .infinity-bubble::before </span>
    <span class="token property-declaration"><span class="token property">left</span><span class="token punctuation">:</span> <span class="token number">100</span><span class="token unit">%</span></span>
    <span class="token property-declaration"><span class="token property">border-width</span><span class="token punctuation">:</span> <span class="token number">10</span><span class="token unit">px</span> <span class="token number">10</span><span class="token unit">px</span> <span class="token number">0</span> <span class="token number">0</span></span>
    <span class="token comment">/*border-color: #F9D7FF transparent transparent transparent*/</span>

  <span class="token selector">.infinity-state </span>
    <span class="token property-declaration"><span class="token property">display</span><span class="token punctuation">:</span> none</span>

  <span class="token selector">.infinity-invisible </span>
    <span class="token property-declaration"><span class="token property">display</span><span class="token punctuation">:</span> none</span>
  
&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></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/infinity.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">9/19/2020, 8:47:49 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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