解决方法:安装 "babel-polyfill"1、命令:cnpm install --save-dev babel-polyfill2、在入口main.js文件引入:import 'babel-polyfill',放页面顶部最好。3、在build文件夹下找到webpack.base.conf.js中app: ["./src/main.js"]改为app: ["babel-polyfill", "./src/main.js"]即:module.exports = {entry: {app: ["babel-polyfill", "./src/main.js"]}
重新运行