动态读取JSON子阵列

Question

我正在使用JSON动态填充父/子下拉列表。我有它的工作，以填补父母下拉，并让孩子下降填写相同的父母数据。如何循环通过父节点中所选值的子数组？

我的 “每个” 线（重点是从我父母DDL值：

var key = $(this).prev("input").val(); 
$.each(jsondata.Id[key].HourTypeCodes, function(i, item) { 

我的JSON

[{ 
    "Id": 1, 
    "Title": "Vacation", 
    "HourTypeCodes": [ 
     { 
      "Id": "05", 
      "Title": "VAC POLICE/FIRE" 
     }, 
     { 
      "Id": "04", 
      "Title": "VACATION" 
     }, 
     { 
      "Id": "62", 
      "Title": "VACATION HOURS PURCHASED" 
     }, 
     { 
      "Id": "60", 
      "Title": "VACATION SELL BACK" 
     } 
    ] 
}, 
{ 
    "Id": 2, 
    "Title": "Holiday", 
    "HourTypeCodes": [ 
     { 
      "Id": "08", 
      "Title": "HOLIDAY" 
     } 
    ] 
}, 
{ 
    "Id": 3, 
    "Title": "Floating Holiday", 
    "HourTypeCodes": [ 
     { 
      "Id": "09", 
      "Title": "FLOATING HOLIDAY" 
     } 
    ] 
}] 

Answer 1

我想通了最后，我发现这个：http://inderpreetsingh.com/2010/10/14/javascriptjson-find-index-in-an-array-of-objects/

从那里，这两条线是可行的：

var i = findIndexByKeyValue(jsonRequestType, "Id", key); 
    $.each(jsonRequestType[i].HourTypeCodes, function(i, item) {