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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- <script src="./js/vue.js"></script>
- <style>
- .div1{
- color: red;
- }
- .div2{
- color: blue;
- }
- .div3{
- font-size: 40px;
- color: green;
- }
- h1{
- display: none;
- }
- .active{
- display: block;
- }
- </style>
- </head>
- <body>
- <div id="app">
- <!-- v-bind 指令 可以将变量数据绑定到元素的属性上 -->
- <!-- 只要标签属性值为变量那么就可以在属性前面添加 v-bind: 前缀 -->
- <img v-bind:src="imgUrl2" alt="">
- <div v-bind:class="className">hello</div>
- <!-- 可以在指令中使用表达式 -->
- <div v-bind:class="className2+'3'">hello2</div>
- <!-- 可以在指令中使用条件表达式 -->
- <h1 v-bind:class="{'active':isShow}"> 你好 </h1>
- <!-- v-bind 可以缩写为 : -->
- <div :class="className">hello3</div>
- </div>
- <script>
- new Vue({
- el:"#app",
- data:{
- imgUrl:"./img/logo-mi2.png",
- imgUrl2:"./img/download.png",
- className:"div2",
- className2:"div",
- isShow:false,
- }
- })
- </script>
- </body>
- </html>
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