class与computed一起应用

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .activeColor{
            color: red;
        }  
    </style>
<body>
    <!--mvvm里面的v-->
    <div id="app">
        <div :class="setClass">
            你好
        </div>
    </div>
    <script src="./node_modules/vue/dist/vue.js"></script>
    <script >
        //这是mvvm里面的vm
        var vm=new Vue({
            el:'#app',
           //这是mvvm里面的m 
            data:{
              isActive:true,
              error:true
            },
            computed:{
                setClass:function(){
                    return{
                      activeColor:this.isActive && this.error     
                    }
                }

            }
        })
    </script>

</body>
</html>

posted on 2018-05-22 20:45 周小姐你好阅读(116) 评论(0) 编辑收藏举报