<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>根据循环出来的列表中的索引值 进行点击当前项为当前点击项进行样式的添加(实现排他思想)</title>
<style type="text/css">
.add{
font-size: 26px;
color: red;
font-weight: bold;
}
</style>
</head>
<body>
<div id="app">
<ul>
<!--当点击元素时 进行样式添加 排他-->
<li v-for="(item , index) in arr" @click="changeFont(index)" :class="[index == num ? 'add' : '']" >
{{ item }}
</li>
</ul>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var vm = new Vue({
el:'#app',
data:{
arr:["精选",'推荐','必备'],
styles:true,
num:0,
},
methods:{
changeFont(index){
this.num = index;
}
}
})
</script>
</body>
</html>