vue启动组件写法

webpack配置文件（webpack.base.conf.js）：

module.exports = {
  entry: {
    app: './src/main.js'
  },
  ......
}

View Code

App.vue

<template>
    <div id="app">
        <router-view></router-view>
    </div>
</template>

<script>
    export default {
        name: 'app',
        components: {
        }
    }

</script>

View Code

main.js

 1 import babelpolyfill from 'babel-polyfill'
 2 import Vue from 'vue'
 3 import App from './App'
 4 import ElementUI from 'element-ui'
 5 import 'element-ui/lib/theme-default/index.css'
 6 import VueRouter from 'vue-router'
 7 import store from './vuex/store'
 8 import Vuex from 'vuex'
 9 import NProgress from 'nprogress'
10 import 'nprogress/nprogress.css'
11 import routes from './routes'
12 import Mock from './mock'
13 //Mock.bootstrap(); //会影响http请求
14 import 'font-awesome/css/font-awesome.min.css'
15 
16 Vue.use(ElementUI)
17 Vue.use(VueRouter)
18 Vue.use(Vuex)
19 
20 NProgress.configure({ showSpinner: false });
21 
22 const router = new VueRouter({
23   routes
24 })
25 
26 /*
27 router.beforeEach((to, from, next) => {
28   //NProgress.start();
29   if (to.path == '/login') {
30     sessionStorage.removeItem('user');
31   }
32   let user = JSON.parse(sessionStorage.getItem('user'));
33   if (!user && to.path != '/login') {
34     next({ path: '/login' })
35   } else {
36     next()
37   }
38 })
39 */
40 //router.afterEach(transition => {
41 //NProgress.done();
42 //});
43 
44 new Vue({
45   //el: '#app',
46   //template: '<App/>',
47   router,
48   store,
49   //components: { App }
50   render: h => h(App)
51 }).$mount('#app')

View Code

$mount()手动挂载

当Vue实例没有el属性时，则该实例尚没有挂载到某个dom中；
假如需要延迟挂载，可以在之后手动调用vm.$mount()方法来挂载。例如：
<div id="app">
{{a}}
</div>
<button onclick="test()">挂载</button>
<script>
var obj = {a: 1}
var vm = new Vue({
data: obj
})
function test() {
vm.$mount("#app");
}
初始，显示的是{{a}}
当点击按钮后，变成了1
参考http://blog.csdn.net/qq20004604/article/details/52303754

vue启动组件写法

推荐阅读