一、安装babel-polyfill
npm install babel-polyfill -D
二、然后在main.js里引入
mport 'babel-polyfill'
三、修改webpack配置文件webpack.base.conf中
{
test: /\.js$/,
loader: 'babel-loader',
include: [resolve('src'), resolve('test'),resolve('static'), resolve('node_modules/webpack-dev-server/client')]
},

本文介绍了如何通过安装和配置babel-polyfill来解决JavaScript新特性在旧浏览器中的兼容性问题。首先,你需要运行npm install babel-polyfill命令进行安装,然后在main.js文件中引入。接着,更新webpack配置文件,将babel-loader的include字段设置为包含src、test、static和webpack-dev-server/client的路径,确保babel-polyfill生效。
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