json根据一个值返回对象，filter方法使用

Posted 2021-01-10 J.Z

d = {

  "student":[

    {

      "count":1000,

      "stuList":[

        {

          "name":"张三",

          "age":"18",

          "address":{

            "city":"北京",

            "street":"长安街"

          }

        },

        {

          "name":"李四",

          "age":"17",

          "address":{

            "city":"上海",

            "street":"解放路"

          }

        }

      ]

    }

  ]

}

 

r = d.student[0].stuList.filter(function(a) {

  return a.name == ‘张三‘;

});




如果你的浏览器尚不支持这个方法，那么你可以给他补上javascript code

 1 if (typeof Array.prototype.filter != "function") {
 2   Array.prototype.filter = function (fn, context) {
 3     var arr = [];
 4     if (typeof fn === "function") {
 5        for (var k = 0, length = this.length; k < length; k++) {
 6           fn.call(context, this[k], k, this) && arr.push(this[k]);
 7        }
 8     }
 9     return arr;
10   };
11 }