VUE注册全局组件和局部组件过程解析

<template>
 <div class="users">
  {{msg}}
 </div>
</template>

<script>
export default {
 name: 'users',
 data () {
  return {
   msg: '用户名'
  }
 }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
 
</style>

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'

// 全局配置组件第一步  Users是文件夹的名字
import Users from './components/Users'

Vue.config.productionTip = false

// 全局注册组件第二部  users是
Vue.component('users',Users)


/* eslint-disable no-new */
new Vue({
 el: '#app',
 router,
 components: { App },
 template: '<App/>'
})

<template>
 <div id="app"> 
  <!-- <router-view/>是子路由视图 -->
  <!-- <router-view/> -->
  <p>{{title}}</p>
  <users></users>
 </div>
</template>

<script>
export default {
 name: 'App',
 data(){
  return{
   title:"users是全局组件的实例化的名字"
  }
 }
}
</script>

<style>

</style>

<template>
 <div id="app"> 
  <!-- <router-view/>是子路由视图 -->
  <!-- <router-view/> -->
  <p>{{title}}</p>
  <users></users>
 </div>
</template>

<script>
/*局部注册组件*/
import Users from './components/Users'
export default {
 name: 'App',
 data(){
  return{
   title:"users是全局组件的实例化的名字"
  }
 },
 components:{
  Users,
 }
}
</script>

<style>

</style>

<template>
 <div id="app"> 
  <app-header></app-header>
  <users></users>
  <app-footer></app-footer>
 </div>
</template>

<script>
import Users from './components/Users'
import Header from './components/Header'
import Footer from './components/Footer'
export default {
 name: 'App',
 data(){
  return{
   title:"users是全局组件的实例化的名字"
  }
 },
 components:{
  'users':Users,
  'app-header':Header,
  'app-footer':Footer
 }
}
</script>

<style>

</style>