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使用JavaScript查找第N個孩子并希望創建Treeview

2022-05-12 22:23:31 區塊鏈

我有這個哈希陣列，并希望將其遞回到樹視圖中以使其ParentTradeFairResourceId存在。

我已經嘗試但沒有成功創建演算法。

在這里，我附上了代碼和我的作業。

var newArr = [{
    "id": "39",
    "tradefairid": "55964",
    "ResourceId": "46",
    "Name": "Yarn",
    "IconUrl": "yarn-icon.jpg",
    "IsForMobile": "0",
    "IsForDesktop": "0",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "57",
    "FairCategoryId": "15",
    "FairCategoryUrl": "#",
    "DisplayOrder": "3",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "40",
    "tradefairid": "55964",
    "ResourceId": "46",
    "Name": "Apparel",
    "IconUrl": "apparel-icon.jpg",
    "IsForMobile": "0",
    "IsForDesktop": "0",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "57",
    "FairCategoryId": "2",
    "FairCategoryUrl": "#",
    "DisplayOrder": "1",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "41",
    "tradefairid": "55964",
    "ResourceId": "46",
    "Name": "Fabric",
    "IconUrl": "yarn-icon.jpg",
    "IsForMobile": "0",
    "IsForDesktop": "0",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "57",
    "FairCategoryId": "6",
    "FairCategoryUrl": "#",
    "DisplayOrder": "2",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "42",
    "tradefairid": "55964",
    "ResourceId": "46",
    "Name": "Allied",
    "IconUrl": "yarn-icon.jpg",
    "IsForMobile": "0",
    "IsForDesktop": "0",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "57",
    "FairCategoryId": "17",
    "FairCategoryUrl": "#",
    "DisplayOrder": "4",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "57",
    "tradefairid": "55964",
    "ResourceId": "26",
    "ResourceImageDetailId": "21",
    "Name": "Exhibitors",
    "IconUrl": "/header/apparel.svg",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "1",
    "DisplayOrder": "1",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "58",
    "tradefairid": "55964",
    "ResourceId": "27",
    "ResourceImageDetailId": "22",
    "Name": "Corporate Videos",
    "IconUrl": "/header/fabric.svg",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "0",
    "DisplayOrder": "6",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "59",
    "tradefairid": "55964",
    "ResourceId": "28",
    "ResourceImageDetailId": "23",
    "Name": "Fair Lobby",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "1",
    "IsMobileDefault": "1",
    "IsMenu": "0",
    "IsHeader": "0",
    "IsMandatory": "0"
  },
  {
    "id": "60",
    "tradefairid": "55964",
    "ResourceId": "29",
    "ResourceImageDetailId": "46",
    "Name": "Auditorium",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "1",
    "DisplayOrder": "2",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "61",
    "tradefairid": "55964",
    "ResourceId": "32",
    "ResourceImageDetailId": "23",
    "Name": "Networking",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "1",
    "DisplayOrder": "4",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "62",
    "tradefairid": "55964",
    "ResourceId": "34",
    "ResourceImageDetailId": "26",
    "Name": "Knowledge",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "1",
    "DisplayOrder": "3",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "63",
    "tradefairid": "55964",
    "ResourceId": "35",
    "Name": "Social Wall",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "0",
    "DisplayOrder": "7",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "64",
    "tradefairid": "55964",
    "ResourceId": "36",
    "Name": "About Organizor",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "0",
    "DisplayOrder": "8",
    "GroupId": "3",
    "IsMandatory": "0"
  },
  {
    "id": "65",
    "tradefairid": "55964",
    "ResourceId": "37",
    "Name": "About the Event",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "0",
    "DisplayOrder": "9",
    "GroupId": "3",
    "IsMandatory": "0"
  },
  {
    "id": "66",
    "tradefairid": "55964",
    "ResourceId": "41",
    "Name": "Footer Exhibitor Directory",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "IsMandatory": "0"
  },
  {
    "id": "67",
    "tradefairid": "55964",
    "ResourceId": "42",
    "Name": "F2F Services",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "0",
    "DisplayOrder": "10",
    "GroupId": "3",
    "IsMandatory": "0"
  },
  {
    "id": "68",
    "tradefairid": "55964",
    "ResourceId": "43",
    "Name": "Contact US",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "0",
    "DisplayOrder": "11",
    "GroupId": "3",
    "IsMandatory": "0"
  },
  {
    "id": "69",
    "tradefairid": "55964",
    "ResourceId": "46",
    "Name": "Category List",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "0",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "1",
    "IsMandatory": "0"
  },
  {
    "id": "70",
    "tradefairid": "55964",
    "ResourceId": "35",
    "Name": "Social Wall",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "0",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "1",
    "DisplayOrder": "5",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "71",
    "tradefairid": "55964",
    "ResourceId": "49",
    "ResourceImageDetailId": "36",
    "Name": "Exhibitors",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "59",
    "DisplayOrder": "3",
    "IsMandatory": "0"
  },
  {
    "id": "72",
    "tradefairid": "55964",
    "ResourceId": "50",
    "ResourceImageDetailId": "35",
    "Name": "Auditorium",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "59",
    "DisplayOrder": "2",
    "IsMandatory": "0"
  },
  {
    "id": "73",
    "tradefairid": "55964",
    "ResourceId": "51",
    "ResourceImageDetailId": "34",
    "Name": "Knowledge",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "59",
    "DisplayOrder": "1",
    "IsMandatory": "0"
  },
  {
    "id": "74",
    "tradefairid": "55964",
    "ResourceId": "52",
    "ResourceImageDetailId": "37",
    "Name": "Networking",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "59",
    "DisplayOrder": "4",
    "IsMandatory": "0"
  },
  {
    "id": "75",
    "tradefairid": "55964",
    "ResourceId": "35",
    "ResourceImageDetailId": "38",
    "Name": "Social Wall",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "59",
    "DisplayOrder": "5",
    "IsMandatory": "0"
  },
  {
    "id": "79",
    "tradefairid": "55964",
    "ResourceId": "56",
    "ResourceImageDetailId": "45",
    "Name": "Booth Detail",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMandatory": "0"
  },
  {
    "id": "95",
    "tradefairid": "55964",
    "ResourceId": "67",
    "Name": "Signup",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "IsMandatory": "0"
  },
  {
    "id": "96",
    "tradefairid": "55964",
    "ResourceId": "69",
    "Name": "Name",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "95",
    "IsMandatory": "1"
  },
  {
    "id": "97",
    "tradefairid": "55964",
    "ResourceId": "70",
    "Name": "Designation",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "95",
    "IsMandatory": "0"
  },
  {
    "id": "98",
    "tradefairid": "55964",
    "ResourceId": "71",
    "Name": "Company",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "95",
    "IsMandatory": "1"
  },
  {
    "id": "99",
    "tradefairid": "55964",
    "ResourceId": "72",
    "Name": "Business Category",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "95",
    "IsMandatory": "0"
  },
  {
    "id": "100",
    "tradefairid": "55964",
    "ResourceId": "73",
    "Name": "Email",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "95",
    "IsMandatory": "1"
  },
  {
    "id": "101",
    "tradefairid": "55964",
    "ResourceId": "74",
    "Name": "Mobile",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "95",
    "IsMandatory": "1"
  },
  {
    "id": "102",
    "tradefairid": "55964",
    "ResourceId": "75",
    "Name": "City",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "95",
    "IsMandatory": "0"
  },
  {
    "id": "104",
    "tradefairid": "55964",
    "ResourceId": "76",
    "Name": "state",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "1",
    "IsMobileDefault": "1",
    "IsMenu": "1",
    "IsHeader": "1",
    "ParentTradeFairResourceId": "103",
    "IsMandatory": "0"
  },
  {
    "id": "105",
    "tradefairid": "55964",
    "ResourceId": "76",
    "Name": "state",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "1",
    "IsMobileDefault": "1",
    "IsMenu": "1",
    "IsHeader": "1",
    "ParentTradeFairResourceId": "104",
    "IsMandatory": "0"
  },
  {
    "id": "106",
    "tradefairid": "55964",
    "ResourceId": "76",
    "Name": "state",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "1",
    "IsMobileDefault": "1",
    "IsMenu": "1",
    "IsHeader": "1",
    "ParentTradeFairResourceId": "104",
    "IsMandatory": "0"
  },
  {
    "id": "107",
    "tradefairid": "55964",
    "ResourceId": "76",
    "Name": "state",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "1",
    "IsMobileDefault": "1",
    "IsMenu": "1",
    "IsHeader": "1",
    "ParentTradeFairResourceId": "105",
    "IsMandatory": "0"
  }
];

function main(newArr) {
  let hasParentResourceId = newArr.filter((word) => word.ParentTradeFairResourceId);
  let hasNotParentResourceId = newArr.filter((word) => !word.ParentTradeFairResourceId);
  console.log(hasParentResourceId);
  console.log(hasNotParentResourceId);
  var countList = hasParentResourceId.reduce((p, c) => {
    p[c.ParentTradeFairResourceId] = (p[c.ParentTradeFairResourceId] || 0)   1;
    return p;
  }, {});
  var createNewArrayForCountList = [];
  for (const property in countList) {
    createNewArrayForCountList.push({
      id: property
    });
  }
  console.log(countList);
  var mapMainArray = [];
  console.log(createNewArrayForCountList);
  setTimeout(() => {
    for (let index = 0; index < createNewArrayForCountList.length; index  ) {
      var createNewArrr = [];
      for (let j = 0; j < hasParentResourceId.length; j  ) {
        if (createNewArrayForCountList[index]["id"] == hasParentResourceId[j]['ParentTradeFairResourceId']) {
          createNewArrr.push(hasParentResourceId[j]);
          if (hasParentResourceId.length - 1) {
            hasParentResourceId[j]['childElements'] = createNewArrr;
          }
        }
      }
      // mapMainArray.push({ 'childElements': createNewArrr });
      // console.log(mapMainArray);
    }
  }, 500);
}
main(newArr);

uj5u.com熱心網友回復：

一步步

我首先會說我希望這很有用，但是您的問題并不完全清楚，我不完全確定您所說的意思

想要將它遞回到樹視圖中，直到 ParentTradeFairResourceId 存在。

我收集到的是，您的每個陣列物件都可以有一個父物件，并且您想要一個物件將每個子物件遞回地嵌套在父物件下，因此您將擁有多個級別。讓我們從只選擇那些位于根目錄（沒有父物件）的物件開始：

// Get the list of all roots
let roots = newArr.filter(e => !e.ParentTradeFairResourceId);

然后，對于每個根，我們要構建樹。為此，我們將向children每個根添加一個串列屬性，并將其所有子項放入其中。我們將創建一個簡單的函式來執行此操作：

function connectChildren(root, arr) {
    root.children = [];

    // connect the children from the array to the root
    for (child of arr) {
        if (child.ParentTradeFairResourceId == root.id) {
            root.children.push(child);
        }
    };
    
    return root;
}

現在，我們可以使用我們的roots陣列并為每個孩子呼叫我們的函式：

// Get the list of all roots
let roots = newArr.filter(e => !e.ParentTradeFairResourceId);

// Attach children to each root
for (let root of roots) {
    root = connectChildren(root, newArr);
}

這一切都很好，我們可以看到 children 陣列被正確的子值填充。但是，這僅適用于 1 級（僅附加根的直接子級）。

我們需要更深入

為了解決這個問題，我們可以對函式中的每個孩子進行遞回呼叫，將它們用作新的根，并附加它們的孩子：

function connectChildren(root, arr) {
    root.children = [];

    // connect the children from the array to the root
    for (let child of arr) {
        if (child.ParentTradeFairResourceId == root.id) {
            root.children.push(child);
        }
    }
    
    // for each child, construct the tree in this same manner
    for (let child of root.children) {
        child = connectChildren(child, arr);
    }

    return root;
}

請注意，我們每次都傳遞完整的陣列，因此如果陣列定義中有任何回圈，這將不起作用。一旦將專案添加到樹中，您可以通過向后回圈和洗掉專案來緩解這種情況arr，但這通常應該可以正常作業。

可運行代碼示例：

let newArr = [{
    "id": "39",
    "tradefairid": "55964",
    "ResourceId": "46",
    "Name": "Yarn",
    "IconUrl": "yarn-icon.jpg",
    "IsForMobile": "0",
    "IsForDesktop": "0",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "57",
    "FairCategoryId": "15",
    "FairCategoryUrl": "#",
    "DisplayOrder": "3",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "40",
    "tradefairid": "55964",
    "ResourceId": "46",
    "Name": "Apparel",
    "IconUrl": "apparel-icon.jpg",
    "IsForMobile": "0",
    "IsForDesktop": "0",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "57",
    "FairCategoryId": "2",
    "FairCategoryUrl": "#",
    "DisplayOrder": "1",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "41",
    "tradefairid": "55964",
    "ResourceId": "46",
    "Name": "Fabric",
    "IconUrl": "yarn-icon.jpg",
    "IsForMobile": "0",
    "IsForDesktop": "0",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "57",
    "FairCategoryId": "6",
    "FairCategoryUrl": "#",
    "DisplayOrder": "2",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "42",
    "tradefairid": "55964",
    "ResourceId": "46",
    "Name": "Allied",
    "IconUrl": "yarn-icon.jpg",
    "IsForMobile": "0",
    "IsForDesktop": "0",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "57",
    "FairCategoryId": "17",
    "FairCategoryUrl": "#",
    "DisplayOrder": "4",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "57",
    "tradefairid": "55964",
    "ResourceId": "26",
    "ResourceImageDetailId": "21",
    "Name": "Exhibitors",
    "IconUrl": "/header/apparel.svg",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "1",
    "DisplayOrder": "1",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "58",
    "tradefairid": "55964",
    "ResourceId": "27",
    "ResourceImageDetailId": "22",
    "Name": "Corporate Videos",
    "IconUrl": "/header/fabric.svg",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "0",
    "DisplayOrder": "6",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "59",
    "tradefairid": "55964",
    "ResourceId": "28",
    "ResourceImageDetailId": "23",
    "Name": "Fair Lobby",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "1",
    "IsMobileDefault": "1",
    "IsMenu": "0",
    "IsHeader": "0",
    "IsMandatory": "0"
  },
  {
    "id": "60",
    "tradefairid": "55964",
    "ResourceId": "29",
    "ResourceImageDetailId": "46",
    "Name": "Auditorium",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "1",
    "DisplayOrder": "2",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "61",
    "tradefairid": "55964",
    "ResourceId": "32",
    "ResourceImageDetailId": "23",
    "Name": "Networking",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "1",
    "DisplayOrder": "4",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "62",
    "tradefairid": "55964",
    "ResourceId": "34",
    "ResourceImageDetailId": "26",
    "Name": "Knowledge",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "1",
    "DisplayOrder": "3",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "63",
    "tradefairid": "55964",
    "ResourceId": "35",
    "Name": "Social Wall",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "0",
    "DisplayOrder": "7",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "64",
    "tradefairid": "55964",
    "ResourceId": "36",
    "Name": "About Organizor",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "0",
    "DisplayOrder": "8",
    "GroupId": "3",
    "IsMandatory": "0"
  },
  {
    "id": "65",
    "tradefairid": "55964",
    "ResourceId": "37",
    "Name": "About the Event",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "0",
    "DisplayOrder": "9",
    "GroupId": "3",
    "IsMandatory": "0"
  },
  {
    "id": "66",
    "tradefairid": "55964",
    "ResourceId": "41",
    "Name": "Footer Exhibitor Directory",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "IsMandatory": "0"
  },
  {
    "id": "67",
    "tradefairid": "55964",
    "ResourceId": "42",
    "Name": "F2F Services",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "0",
    "DisplayOrder": "10",
    "GroupId": "3",
    "IsMandatory": "0"
  },
  {
    "id": "68",
    "tradefairid": "55964",
    "ResourceId": "43",
    "Name": "Contact US",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "0",
    "DisplayOrder": "11",
    "GroupId": "3",
    "IsMandatory": "0"
  },
  {
    "id": "69",
    "tradefairid": "55964",
    "ResourceId": "46",
    "Name": "Category List",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "0",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "1",
    "IsMandatory": "0"
  },
  {
    "id": "70",
    "tradefairid": "55964",
    "ResourceId": "35",
    "Name": "Social Wall",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "0",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "1",
    "IsHeader": "1",
    "DisplayOrder": "5",
    "GroupId": "1",
    "IsMandatory": "0"
  },
  {
    "id": "71",
    "tradefairid": "55964",
    "ResourceId": "49",
    "ResourceImageDetailId": "36",
    "Name": "Exhibitors",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "59",
    "DisplayOrder": "3",
    "IsMandatory": "0"
  },
  {
    "id": "72",
    "tradefairid": "55964",
    "ResourceId": "50",
    "ResourceImageDetailId": "35",
    "Name": "Auditorium",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "59",
    "DisplayOrder": "2",
    "IsMandatory": "0"
  },
  {
    "id": "73",
    "tradefairid": "55964",
    "ResourceId": "51",
    "ResourceImageDetailId": "34",
    "Name": "Knowledge",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "59",
    "DisplayOrder": "1",
    "IsMandatory": "0"
  },
  {
    "id": "74",
    "tradefairid": "55964",
    "ResourceId": "52",
    "ResourceImageDetailId": "37",
    "Name": "Networking",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "59",
    "DisplayOrder": "4",
    "IsMandatory": "0"
  },
  {
    "id": "75",
    "tradefairid": "55964",
    "ResourceId": "35",
    "ResourceImageDetailId": "38",
    "Name": "Social Wall",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "59",
    "DisplayOrder": "5",
    "IsMandatory": "0"
  },
  {
    "id": "79",
    "tradefairid": "55964",
    "ResourceId": "56",
    "ResourceImageDetailId": "45",
    "Name": "Booth Detail",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMandatory": "0"
  },
  {
    "id": "95",
    "tradefairid": "55964",
    "ResourceId": "67",
    "Name": "Signup",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "IsMandatory": "0"
  },
  {
    "id": "96",
    "tradefairid": "55964",
    "ResourceId": "69",
    "Name": "Name",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "95",
    "IsMandatory": "1"
  },
  {
    "id": "97",
    "tradefairid": "55964",
    "ResourceId": "70",
    "Name": "Designation",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "95",
    "IsMandatory": "0"
  },
  {
    "id": "98",
    "tradefairid": "55964",
    "ResourceId": "71",
    "Name": "Company",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "95",
    "IsMandatory": "1"
  },
  {
    "id": "99",
    "tradefairid": "55964",
    "ResourceId": "72",
    "Name": "Business Category",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "95",
    "IsMandatory": "0"
  },
  {
    "id": "100",
    "tradefairid": "55964",
    "ResourceId": "73",
    "Name": "Email",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "95",
    "IsMandatory": "1"
  },
  {
    "id": "101",
    "tradefairid": "55964",
    "ResourceId": "74",
    "Name": "Mobile",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "95",
    "IsMandatory": "1"
  },
  {
    "id": "102",
    "tradefairid": "55964",
    "ResourceId": "75",
    "Name": "City",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "0",
    "IsActive": "1",
    "IsDesktopDefault": "0",
    "IsMobileDefault": "0",
    "IsMenu": "0",
    "IsHeader": "0",
    "ParentTradeFairResourceId": "95",
    "IsMandatory": "0"
  },
  {
    "id": "104",
    "tradefairid": "55964",
    "ResourceId": "76",
    "Name": "state",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "1",
    "IsMobileDefault": "1",
    "IsMenu": "1",
    "IsHeader": "1",
    "ParentTradeFairResourceId": "103",
    "IsMandatory": "0"
  },
  {
    "id": "105",
    "tradefairid": "55964",
    "ResourceId": "76",
    "Name": "state",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "1",
    "IsMobileDefault": "1",
    "IsMenu": "1",
    "IsHeader": "1",
    "ParentTradeFairResourceId": "104",
    "IsMandatory": "0"
  },
  {
    "id": "106",
    "tradefairid": "55964",
    "ResourceId": "76",
    "Name": "state",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "1",
    "IsMobileDefault": "1",
    "IsMenu": "1",
    "IsHeader": "1",
    "ParentTradeFairResourceId": "104",
    "IsMandatory": "0"
  },
  {
    "id": "107",
    "tradefairid": "55964",
    "ResourceId": "76",
    "Name": "state",
    "IsForMobile": "1",
    "IsForDesktop": "1",
    "IsWithLogin": "1",
    "IsActive": "1",
    "IsDesktopDefault": "1",
    "IsMobileDefault": "1",
    "IsMenu": "1",
    "IsHeader": "1",
    "ParentTradeFairResourceId": "105",
    "IsMandatory": "0"
  }
];

function connectChildren(root, arr) {
    root.children = [];

    // connect the children from the array to the root
    for (let child of arr) {
        if (child.ParentTradeFairResourceId == root.id) {
            root.children.push(child);
        }
    };

    // for each child, construct the tree in this same manner
    for (let child of root.children) {
        child = connectChildren(child, arr);
    }

    return root;
}

function main(arr) {
    // Get the list of all roots
    let roots = arr.filter(e => !e.ParentTradeFairResourceId);

    // Attach children to each root
    for (let root of roots) {
        root = connectChildren(root, arr);
    }
    console.log('Result object:', roots);
}

main(newArr);

我希望這可以幫助您解決問題。假設您想為樹保持最大深度，您可以傳遞一個深度，在每次遞回呼叫時增加它，并且僅在深度等于最大值時才添加子級。這也將防止意外的無限遞回。如果這不是您正在尋找的解決方案，您實際上應該創建一個更簡單的示例：從輸入陣列中洗掉所有不必要的欄位，并明確說明您希望輸出是什么。

轉載請註明出處，本文鏈接：https://www.uj5u.com/qukuanlian/472728.html

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