vue如何判断dom的class vue点击给dom添加class然后获取含有class的dom

{{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