vue.js implements methods of operating classes

This time, I will bring you the method of operating classes in vue.js. What are the precautions for operating classes in vue.js? The following is a practical case, let's take a look.

Recently, I need to use vue to implement a page for ordering food and selecting product specifications. I need to dynamically add class names to the clicked elements through vue to make them change color, and delete

classes for other . As shown in the picture:

I started looking for many methods on the Internet and found that they were not very useful. Finally, I found a good discovery. Record it

html:

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

script:

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;
     },
    }
   })

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

Detailed explanation of the use of modularization in AngularJS applications

How to implement DOM insertion nodes in JS

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