<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
.aclass{
color: red;
}
.bclass{
color: blue;
}
.cclass{
font-size: 40px;
}
</style>
<script src="vue.min.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<!-- class的绑定 :class="xxx"
1.xxx是字符串
2.xxx是对象
3.xxx是数组
-->
<div id="app">
<h3>class的绑定</h3>
<p :class="a" class="cclass">xxx是字符串</p>
<!-- 属性名：类名 属性值：布尔值 -->
<p :class="{aclass:true,bclass:false}">xxx是对象</p>
<p :class="{aclass:isA,bclass:isB}">xxx是对象</p>
<p :class="[‘aclass‘,‘cclass‘]">xxx是数组</p>
<h3>style的绑定</h3>
<p :style="{color:activeColor,fontsize:fontSize+‘px‘}">style的绑定</p>
<button @click="update">更新</button>
</div>
<script type="text/javascript">
const vm = new Vue({
el:"#app",
data:{
a:"aclass",
isA:true,
isB:false,
activeColor:"red",
fontSize:20
},
methods:{
update(){
this.a="bclass"
this.isA=false
this.isB=true
this.activeColor="blue"
this.fontSize=60
}
}
})
</script>
</body>
</html>
原文：https://www.cnblogs.com/weixin2623670713/p/13126413.html