vue如何判断dom的class

                  
{{item.name}}
                  

                    {{item2.name}}
                  
                
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

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