...
<ul id="demo">
 <li v-for="item in list">{{item}}</div>
</ul>
...

new Vue({
 el:'#demo',
 data:{
  list=[0,1,2,3,4,5,6,7,8,9,10]
 },
 methods:{
  push:function(){
   this.list.push(11);
   this.nextTick(function(){
    alert('数据已经更新')
   });
   this.$nextTick(function(){
    alert('v-for渲染已经完成')
   })
  }
 }
})