如何獲得 JSON 數據的最內層孩子

Question

我有一個類似這樣的 JSON 數據，我需要獲取最內部孩子的數據，即hierarchyLevel: 4 。 而且這個 JSON 數據不是靜態的，hierarchyLevel 可以是任何東西，比如 5、6、7 任何東西。 請幫助在javascript中找到解決方案。

{
  "hierarchylist": [
    {
      "hierarchyId": 10,
      "hierarchyLevel": 0,
      "name": "ABC",
      "parentId": 0,
      "children": [
        {
          "hierarchyId": 12,
          "hierarchyLevel": 1,
          "name": "ABC-Child1",
          "parentId": 10,
          "children": [
            {
              "hierarchyId": 2,
              "hierarchyLevel": 2,
              "name": "People Management & Development1 ",
              "parentId": 12,
              "children": [
                {
                  "hierarchyId": 5,
                  "hierarchyLevel": 3,
                  "name": "Resourcing2_1",
                  "parentId": 2,
                  "children": [
                    {
                      "hierarchyId": 19,
                      "hierarchyLevel": 4,
                      "name": "Resource Request ",
                      "parentId": 5,
                      "children": [],
                      "docId": 19,
                      "docstatusid": 20
                    }
                  ]
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}

謝謝。

Answer 1

這應該讓你得到最內在的：

 let data = { "hierarchylist": [ { "hierarchyId": 10, "hierarchyLevel": 0, "name": "ABC", "parentId": 0, "children": [ { "hierarchyId": 12, "hierarchyLevel": 1, "name": "ABC-Child1", "parentId": 10, "children": [ { "hierarchyId": 2, "hierarchyLevel": 2, "name": "People Management & Development1 ", "parentId": 12, "children": [ { "hierarchyId": 5, "hierarchyLevel": 3, "name": "Resourcing2_1", "parentId": 2, "children": [ { "hierarchyId": 19, "hierarchyLevel": 4, "name": "Resource Request ", "parentId": 5, "children": [], "docId": 19, "docstatusid": 20 } ] } ] } ] } ] } ] } let children = data.hierarchylist[0].children; while(children[0] && children[0].children && children[0].children.length) { children = children[0].children; } console.log(children);

Answer 2

你可以試試while循環，這里是例子

var children = json['hierarchylist']['children'][0];

while(typeof children !== 'undefined') {
    children = children['children'][0];
}

console.log(children);