vue-cli webpack中引入jquery

1.首先在package.json里的dependencies加入"jquery" : "^2.2.3"，然后install

2.在webpack.base.conf.js里加入

var webpack = require("webpack")

  在module.exports的最后加入

plugins: [new webpack.optimize.CommonsChunkPlugin('common.js'),new webpack.ProvidePlugin({jQuery: "jquery",$: "jquery"})]

3.然后一定要重新 npm run dev

4.在main.js 引入就ok了

import $ from 'jquery'