npm install --save-dev babel-polyfill
複製代碼
1.require("babel-polyfill");
2.import "babel-polyfill";
3.module.exports = {
  entry: ["babel-polyfill", "./app/js"]
};
複製代碼
// 引入babel-polyfill文件 , 處理全部es6語法,使用es5語法
<script src="https://cdn.bootcss.com/babel-polyfill/6.23.0/polyfill.min.js"></script>
複製代碼