<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="https://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script src="https://www.jq22.com/jquery/vue.min.js"></script>
<style>
.active {
display: none;
}
.bg {
background: blue;
}
</style>
</head>
<body>
<div id="app">
<ul>
<li>1</li>
<li :class="[fiFlag ? 'active' : '' ]">2</li>
<li>3</li>
<li :class="[twoFlag ? 'active' : '' ]">4</li>
</ul>
<button @click="btn(1)">第二个</button>
<button @click="btn(2)">第四个</button>
<button @click="btn(3)">显示两个</button>
</div>
</body>
<script>
new Vue({
el: '#app',
data() {
return {
fiFlag: true,
twoFlag: true,
}
},
methods: {
btn(val) {
if (val == 1) {
this.fiFlag = false;
this.twoFlag = true;
} else if (val == 2) {
this.fiFlag = true;
this.twoFlag = false;
} else {
this.fiFlag = true;
this.twoFlag = true;
}
}
}
})
</script>
</html>
