study_express/4-xzswn/02-splice.js

const fs = require('fs');
let xindaming = require('./xindaming');
let index = -1;
let j = 0;
xindaming.forEach((key, i) => {
  if (key.title.indexOf('第一章') > -1) {
    index = i;
  }
});
xindaming = xindaming.splice(index, xindaming.length);
xindaming.map((key, i) => {
  key.index = i + 1;
});
fs.writeFileSync('./xindaming.js', `module.exports = ${JSON.stringify(xindaming)}`);