vue之nextTick

Posted 2022-10-14 wujiaqi

<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‘)
         )
     
)

 

* `Vue.nextTick(callback)`，当数据发生变化，更新后执行回调。
* `Vue.$nextTick(callback)`，当dom发生变化，更新后执行的回调。