这里不跟大家再去把Vue文档上的一些指令用法或者基础知识再复述一遍，既然是从入门到实战，我直接将平时项目中需要实现的一些效果拆分成模块。你们遇到了相关的指令或者不知道怎么用的方法自己对着文档去查，再回过头来看我的实现代码。记住，通读Vue文档真的很重要，很重要！
这里的Vue以单文件的形式引入，另外代码在实现上会一步步的进行优化，客官不要着急！
下面是一个样式稍微丑陋，但功能OK的选项卡。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
<meta name="viewport" content="maximum-scale=1.0,minimum-scale=1.0,user-scalable=no,width=device-width">
<meta name="apple-mobile-web-app-title" content="Vue选项卡">
<title>Vue实现选项卡</title>
<script type="text/javascript" src="../js/vue.js"></script>
</head>
<style>
* {
padding: 0;
margin: 0;
}
.box {
width: 800px;
height: 200px;
margin: 0 auto;
border: 1px solid #000;
}
.tabs li {
float: left;
margin-right: 8px;
list-style: none;
}
.tabs .tab-link {
display: block;
width: 250px;
height: 49px;
text-align: center;
line-height: 49px;
background-color: #5597B4;
color: #fff;
text-decoration: none;
}
.tabs .tab-link.active {
height: 47px;
border-bottom: 2px solid #E35885;
transition: .3s;
}
.cards {
float: left;
}
.cards .tab-card {
display: none;
}
.clearfix:after {
content: "";
display: block;
height: 0;
clear: both;
}
.clearfix {
zoom: 1;
}
</style>
<body>
<div id="app" class="box">
<ul class="tabs clearfix">
<li v-for="(tab,index) in tabsName">
<a href="#" rel="external nofollow" class="tab-link" @click="tabsSwitch(index)" v-bind:class="{active:tab.isActive}">{{tab.name}}</a>
</li>
</ul>
<div class="cards">
<div class="tab-card" style="display: block;">这里是HTML教程</div>
<div class="tab-card">欢迎来到CSS模块</div>
<div class="tab-card">嗨，这里是Vue</div>
</div>
</div>
</body>
<script>
var app = new Vue({
el: "#app",
data: {
tabsName: [{
name: "HTML",
isActive: true
}, {
name: "CSS",
isActive: false
}, {
name: "Vue",
isActive: false
}],
active: false
},
methods: {
tabsSwitch: function(tabIndex) {
var tabCardCollection = document.querySelectorAll(".tab-card"),
len = tabCardCollection.length;
for(var i = 0; i < len; i++) {
tabCardCollection[i].style.display = "none";
this.tabsName[i].isActive = false;
}
this.tabsName[tabIndex].isActive = true;
tabCardCollection[tabIndex].style.display = "block";
}
}
})
</script>
</html>