vue $set

data={parentName:"",parentId:""}

this.$set(this.addData,'parentName',name);  //set改变对象值
this.$set(this.addData,'parentId',id);

//修改数组的值
var arr=[1,2,3,4]
this.$set(this.arr,index,newData) //index:数组下标   newData:新赋予的值