lovecoding
/
W250913


			
				
					
						
						
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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>
    <style>
        .box1{
            color: red;
        }
        .box2{
            color: blue;
        }
        .box3{
            font-size: 30px;
        }
    </style>
</head>
<body>
    <div id="app">
        <!-- v-bind: 可以将属性值解析成变量 -->
        <!-- 可以省略v-bind: 直接使用 :  -->
        <!-- <div v-bind:class="className">hello world</div> -->
        <div :class="'active '+ className">hello world</div>
        <div v-bind:class="{'box1':isActive}">你好世界</div>
        <div v-bind:class="[className2,className]">你好世界</div>
    </div>
    <!-- v-bind 指令 功能类似于js中的setAttribute / getAttribute方法 可以向标签中动态绑定属性值 -->
    <script src="./js/vue.js"></script>
    <script>
        new Vue({
            el:"#app",
            data:{
                className:"box2",
                className2:"box3",
                isActive:false
            }
        })
    </script>
</body>
</html>