如何在 angularJS 中解析 Json 字符串？ [关闭]

Question

我有一个类似的 nodeJSON 字符串

{
  "Name": "Addition",
  "Id": "3",
  "ParentId": "1",
  "children": [
    {
      "Name": "Two Numbers",
      "Id": "5",
      "ParentId": "3",
      "children": []
    },
    {
      "Name": "Three Numbers",
      "Id": "6",
      "ParentId": "3",
      "children": []
    }
  ]

}

我将 parentId 设为 3，然后我想将键值名称显示为“Addition”，该名称应与其 Id 匹配。

{
      "Name": "Addition",
      "Id": "3",
      "ParentId": "1",
      "children": [....]
}

myApp.controller('leafController', function($scope){

$scope.getname = function(parentid,nodeJSON )
 { 
   //parentid is 3 here
    $scope.Id = parentid; 
    $scope.data = nodeJSON ;
    // i want to get name according to id
    // Name : Addition (if Id is 3) 

 };


  });

我被打动了。

请帮帮我，
提前致谢

Answer 1

循环children 数组并返回带有Id = 3 的子元素，函数如下：

function getChildrenById(children, value) {
     for (var i=0, iLen=children.length; i<iLen; i++) {

        if (arr[i].Id == value) return arr[i];
      }
    }
}

并称它为getChildrenById(children, 3)