解构表达式的实际用处

        //修改用户信息
        updateUser(){
            this.dialogFormVisibleUpdate = false;
            let obj = new Object();
            const {id,user,phone} = this.formUser;
            obj = {id:id,user:user,phone:phone};
            api.user.update(obj).then(response => {
                this.search(this.formInline);
                this.formUser = {};
            })
        },

用来复制对象的部分属性给新对象，不要太方便