<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>结构渲染</title>
</head>
<body>
    <div id="app">
        <p>
            <button v-on:click="handler_1">修改数组元素</button>
            <button v-on:click="handler_2">修改数组长度</button>
        </p>
        <p v-for="item in list" v-bind:key="item">
            <input type="checkbox">{{item}}
        </p>
    </div>

    <script src="../js/vue.js"></script>

    <script>
        let vm = new Vue({
            el:'#app',
            data:{
                list:['javascript','html','css']
            },
            methods:{
                handler_1:function () {
                    this.$set(this.list,1,'python');
                },
                handler_2(){
                    this.list.splice(1);
                }
            }
        });


    </script>
</body>
</html>