vue实现菜单切换，点击菜单导航切换不同的内容以及为当前点击的选项添加样式，或者组件。

method里：

 css:

 

 

 

 

html代码：

<nav>

<ul>

<li>

<a :class="{active : Index == 1}" @click="changeNav(1)">学校新闻</a>

<div v-if="Index == 1" class="line"></div>

</li>

<li>

<a :class="{active : Index == 2}" @click="changeNav(2)">就业新闻</a>

<div v-if="Index == 2" class="line"></div>

</li>

<li>

<a :class="{active : Index == 3}" @click="changeNav(3)">行业新闻</a>

<div v-if="Index == 3" class="line"></div>

</li>

</ul>

</nav>

 

js代码：

data () {

return {

Index:1,

}

},

methods: {

//导航切换

changeNav(index){

if(index == 1){

this.Index = 1;

}else if(index == 2){

this.Index = 2;

}else if(index == 3){

this.Index = 3

}

},

 

 

css代码：

.news-container nav li .line{

width: 50px;

height: 4px;

background: #E96463;

border: none;

position: relative;

top: -4px;

right: -86px;

}

.news-container nav li .active{

color: rgba(233,100,99,1);

}

}