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console
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Vue 测试实例 - 菜鸟教程(runoob.com)</title>
<script src="https://unpkg.com/vue/dist/vue.js"></script>
    <style>
            .active{
            border:1px solid red;
            width:100px;
            height:100px;
        }
    .error{
            background-color:orange;
        }
    </style>
</head>
<body>
    <div id="app">
        <div v-bind:class='[activeClass, errorClass]'>测试样式</div>
        <button v-on:click='handle'>切换 </button>
    </div>
    <script type="text/javascript">
    // 样式绑定
    var vm= new Vue({
        el:'#app',
        data:{
            activeClass:'active',
            errorClass:'error'
        
        },
        methods:{
            handle;function(){
                this.activeClas ='';
                this.errorClass='';
            }
        }
    });
    </script>
</body>
</html>