How to use vue to determine the class of dom

This time I will show you how to use vue to determine the class of dom class, and what are the precautions for using vue to determine the class of dom. The following is a practical case, let's take a look.

vue clicks to add a class to the dom and then gets the dom containing the class

<p class="chose-ck" v-for="(item,index2) in colors" :key="index2" ref="chosebox">
                  <p>{{item.name}}</p>
                  <dt v-for="(item2,index) in item.childsCurGoods" :key="item2.id" :class="index==iac[index2]?&#39;check&#39;:&#39;&#39;" :id="item2.id" :data-chosename="item.name" :data-choseidname="item2.name" :data-chose="item.id" :data-id="item2.id" @click="chek(index2,index)" >
                    {{item2.name}}
                  </dt>
                </p>js
  chek(index2, index) {
      this.iac[index2] = index
      this.iac = this.iac.concat([]);
      this.checkchose()
    },
    checkchose:function(){
      var chose=this
      var chosedom=chose.$refs.chosebox
      console.log(chosedom)
      for (var i=0;i<chosedom.length;i++) {
        var children=chosedom[i].children
        for (var j=0;j<children.length;j++) {  
          if(children[j].className=="check")
          {
            console.log(children[j])
          }
        }
      }
      
    }

The dom obtained after clicking is printed

if(children[j].className=="check")

Added Determine why the printed DOM is the DOM before clicking

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:

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How to use Vue to achieve drag and drop effects

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