Vue 指令

  1. v-bind 
    <!DOCTYPE html>
<html lang="en" xmlns:v-bind="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="app">
    <span v-bind:title="message">鼠标悬停显示</span>
</div>


<!--引入vue.js 包-->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
    var vm=new Vue({
        el:"#app",
        data:{
            message:"hello,vue!"
        }
    });

</script>

</body>
</html>

    2. v-if  v-else

    <!DOCTYPE html>
<html lang="en" xmlns:v-bind="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="app">
    <h1 v-if="ok">yes</h1>
    <h1 v-else>no</h1>
</div>

<!--引入vue.js 包-->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
    var vm=new Vue({
        el:"#app",
        data:{
            ok:true
        }
    });

</script>

</body>
</html>

    3. v-if  v-else-if  v-else 

    <!DOCTYPE html>
<html lang="en" xmlns:v-bind="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="app">
    <h1 v-if="type==='A'">A</h1>
    <h1 v-else-if="type==='B'">B</h1>
    <h1 v-else-if="type==='D'">D</h1>
    <h1 v-else>C</h1>
</div>

<!--引入vue.js 包-->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
    var vm=new Vue({
        el:"#app",
        data:{
            type:'A'
        }
    });

</script>

</body>
</html>

     

posted @ 2021-01-22 17:15  创客未来  阅读(87)  评论(0)  编辑  收藏  举报