jquery遍历嵌套对象

Question

我从php获取数据。我解析为JSON

var d = $.parseJSON(returnData);

d.designer看起来像：

[Object, Object, Object] 

0: Object
_id: 1 
family: null
firstname: "XX"
lastname: "YY"
__proto__: Object

1: Object
_id: 2 
family: null
firstname: "XX"
lastname: "YY"
__proto__: Object

2: Object
_id: 5 
family: null
firstname: "XX"
lastname: "YY"
__proto__: Object

使用jquery如何循环使用对象来获取：

Id: 1
Id: 2
ID: 5

其中ID值是键_id？

Answer 1

您可以使用每个返回值和每个元素的键

$.each(d, function( index, value ) {
  console.log("ID: "+index);
});