1.npm run *** 是执行配置在package.json中的脚本，比如：
"scripts": {
"dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js",
"start": "npm run dev", "lint": "eslint --ext .js,.vue src",
"build": "node build/build.js"
},
npm run dev 执行的就是webpack-dev-server --inline --progress --config build/webpack.dev.conf.js命令
2.webpack.dev.conf文件通过merge引用了webpack.base.conf.js文件
const baseWebpackConfig = require('./webpack.base.conf')
3.在webpack.base.conf.js文件中调用了./src/main.js
entry: {
app: './src/main.js'
},
4.main.js用到了一个html元素#app，并创建了一个vue
new Vue({
el: '#app',
router,
components: { App },
template: '<App/>'
})
5.创建的vue会插入到webpack.dev.conf.js配置中HtmlWebpackPlugin配置的文件中
new HtmlWebpackPlugin({
filename: 'index.html',
template: 'index.html',
inject: true
}),
6.main.js中配置了router-view，router-view会加载HelloWorld.vue并插入到index.html的中