VUE项目，从mongodb后台获取的对象数组，前端对其进行排序

methods: {

    //升序排序,js中方法

    sortRole (pro) {

        return function (a,b) {

            var value1 = a[pro];

            var value2 = b[pro];

            return value1 - value2;

         }

     }

},

computed: {

    dateTrans() {

      //tableData后台获取的对象数组

        this.tableData = this.tableData.sort(this.sortRole('userId'))

     }

}

数组是这样的：

[{

"_id": "5baf3543ec19c50cfc7d9e15",

"userId": 1005,

"name": "王五",

"hiredate": "2018-09-20T16:00:00.000Z",

"entryTo": "南京",

"currentCity": "Nj",

"projectTeam": "nj",

"status": "",

"consumer": "一般用户",

"password": "666",

"addAccess": false,

"deleteAccess": false,

"updateAccess": false,

"findAccess": true

},………………]