| 指令 | 释义 |
|---|
| v-bind |
直接写js的变量或语法（不推荐） |
| : |
直接写js的变量或语法（推荐） |
v-bind:class=’js变量’可以缩写成：:class=’js变量’
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>属性指令</title>
<script src="https://cdn.bootcdn.net/ajax/libs/vue/2.6.12/vue.min.js"></script>
<style>
.red {
color: rgba(255, 104, 104, 0.7);
}
.purple {
color: rgba(104, 104, 255, 0.7);
}
</style>
</head>
<body>
<div id="box">
<img v-bind:src="url" alt="" height="100">
<br>
<button @click="handleClick">点我变色</button>
<div :class="isActive?'red':'purple'">
<h1>我是一个div</h1>
</div>
</div>
</body>
<script>
let vm = new Vue({
el: '#box',
data: {
url: 'https://ss0.bdstatic.com/70cFvHSh_Q1YnxGkpoWK1HF6hhy/it/u=205441424,1768829584&fm=26&gp=0.jpg',
change: 'red',
isActive: true
},
methods: {
handleClick() {
this.isActive = !this.isActive
},
}
})
</script>
</html>
