直接在数组里,改变数组来达到重新渲染页面的目的,

需要用push等数组方法,

或者$set(),或者给数组重新赋值,来改变数组引用地址

而是直接索引=

<body>
    <div id="app">
     <li v-for='item in students'>
         <span>{{ item.name }}</span>
         <span>{{ item.age }}</span>
     </li>
       <button @click='addStudent'>click</button>
<button @click='$ set(students,3,{name:"xioaming",age:102333})'>click</button>
<button @click=' Vue.set(students,3,{name:"xioaming",age:102333})'>click</button>
    </div>
    <script src="../vue.js"></script>
    <script>
        var vm = new Vue({
            el: '#app',
            data: {
                students: [
                    {name:"xioaming",age:10},
                    {name:"xioaming",age:101},
                    {name:"xioaming",age:102}
                ]
            },
            methods: {
                addStudent: function(){
                   this.students[3] =   {name:"xioaming",age:102333}//这样不能重新渲染页面
this.students.push(
{name:"xioaming",age:102333})
} } }) </script>

 

转载于:https://www.cnblogs.com/dangdanghepingping/p/10244812.html

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