01-基础-系统指令-v-bind-绑定 class-对象语法 

<!DOCTYPE html>
<html>

<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>
</head>

<body>
    <div id='app'>
        <!-- : class 对象  :class="{希望渲染的类名:值data中bool型数据}"-->
        <p class="main" :class="{left:a,right:b}">
            内容
        </p>
    </div>
    <script src='./vue.js'></script>
    <script>
        var vm = new Vue({
            el: '#app',
            data: {
                a: true,
                b: false
            },
            methods: {
            }
        });
    </script>
</body>

</html>

posted @ 2019-05-28 20:53  193557749  阅读(161)  评论(0)  编辑  收藏  举报