<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Document</title>
<script type="text/javascript" src="../first/vue1026.js"></script>
<style>
.active{
background-color: aquamarine;
}
</style>
</head>
<body>
<div id="app">
<ul>
<li v-for="(index,item) in books" :key="item" :class="{active: currentIndex===index}" @click="bookClick(index)">{{item}}</li>
</ul>
</div>
</body>
<script type="text/javascript">
var vm = new Vue({
el:"#app",
data:{
books:['红楼梦','西游记','水浒传','三国演义'],
currentIndex:0,//记录点击状态
isClick:true
},
methods:{
bookClick(index){
this.currentIndex = index
}
}
});
</script>
</html>
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