vue.js实现点击后动态添加class及删除同级class的实现代码

<div class="weui-mask" id="guige">
 <div class="guigeBox">
 <p class="guigeTitle">{{guigeName}}</p>
 <p class="guigeP guigeP01">规格</p>
 <div class="indexGuiGe">
 <span v-for="value,index in guigeList" v-on:click="guige(index)" v-bind:class="{on:index==guigeSpan}">{{value.guige_name}}</span>
 </div>
 <p class="guigeP">口味</p>
 <div class="indexKouwie">
 <span v-for="value,index in kouweiList" v-on:click="kouwei(index)" v-bind:class="{on:index==kouweiSpan}">{{value.guige_name}}</span>
 </div>
 </div>
 </div>

var guige=new Vue({
 el: '#guige',
 data:{
 guigeSpan:"-1", //控制点亮状态 -1为默认不点亮
 kouweiSpan:"-1", //控制点亮状态 
 },
 methods:{
 guige:function(index){ //当点击时候点亮，同级的span标签删除Class
 this.guigeSpan = index;
 },
 kouwei:function(index){
 this.kouweiSpan = index;
 },
 }
 })