一.NPM安装的jQuery
使用vue-cli构建的vue项目,需要修改的是build/webpack.base.conf.js
1.添加引入webpack,后面的plugins那里需要
const webpack = require('webpack')
2.增加一个plugins
plugins: [ new webpack.optimize.CommonsChunkPlugin('common.js'), new webpack.ProvidePlugin({ $: "jquery", jQuery: "jquery" }) ]