json根据一个值返回对象，filter方法使用

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 }