Vue.component('tab-title',{
   props:['title'],
   template:'<li v-on:click="$emit(\'change\')">{{title}}</li>'
 })
 Vue.component('tab-content',{
   props:['content'],
   template:'<div>{{content}}</div>'
 })

<div id="app">
  <ul class="navTab">
   <li v-for="(navTab,index) in navTabs" is="tab-title" v-bind:info="navTab.text" v-bind:class="{active:navTab.isActive}" v-on:addactive="switchActive(index)"></li>
  </ul>
  <div class="tabContent">
   <div v-for="navTab in navTabs" is="tab-content" v-bind:content="navTab.tabContent" 
   v-bind:class="['tab-panel',{active:navTab.isActive}]" v-if="navTab.isActive"></div>
  </div>
  </div>

var app=new Vue({
      el: '#app',
     components: {
       'tab-title': {
        props:['info'],//接受父元素傳遞的參數(shù)
        template:'<li v-on:click="$emit(\'addactive\')">{{info}}</li>'//點(diǎn)擊時傳遞通過$emit子元素傳遞給父元素調(diào)用 addactive方法（不能使用駝峰寫法）
        },
       'tab-content':{
         props:["content"],
        template:'<div>{{content}}</div>'
       }
     },
     methods:{
       switchActive:function(index){
        for(var i=0;i<this.navTabs.length;i++){
         this.navTabs[i].isActive=false;
        }
        this.navTabs[index].isActive=true;
        
       }
     },
     data:{
      navTabs:[
       {
        text:"tab1",
        isActive:true,
        tabContent:'this is tab1 content'
       },
       {
        text:"tab2",
        isActive:false,
        tabContent:'this is tab2 content'
       },
       {
        text:"tab3",
        isActive:false,
        tabContent:'this is tab3 content'
       }
      ]
     }
    });