Json使用分层树使用javascript

Question

我有一个JSON数组。我尝试转换嵌套分层树。但它没有工作。我需要一个使用这个JSON的分层树。

这里是我的数据：

[{ 
    "_id" : "59b65ee33af7a11a3e3486c2", 
    "C_TITLE" : "Sweet and Snacks", 
    "C_PARENT" : "0", 
    "C_ICON" : "", 
    "C_IMAGE" : "59b65ee33af7a11a3e3486c2_sweets.jpg", 
    "C_STATUS" : "Active" 
} 
{ 
    "_id" : "59b663d709da571dc3d79f49", 
    "C_TITLE" : "Groceries", 
    "C_PARENT" : "0", 
    "C_ICON" : "", 
    "C_IMAGE" : "59b663d709da571dc3d79f49_grocery.jpg", 
    "C_STATUS" : "Active" 
}, 
{ 
    "_id" : "59b6648209da571dc3d79f4a", 
    "C_TITLE" : "Dals & Pulses", 
    "C_PARENT" : "59b663d709da571dc3d79f49", 
    "C_ICON" : "", 
    "C_IMAGE" : "59b6648209da571dc3d79f4a_dals.jpg", 
    "C_STATUS" : "Active" 
}, 
{ 
    "_id" : "59b6657509da571dc3d79f4c", 
    "C_TITLE" : "Rice & Rice products", 
    "C_PARENT" : "59b663d709da571dc3d79f49", 
    "C_ICON" : "", 
    "C_IMAGE" : "59b6657509da571dc3d79f4c_rice.jpg", 
    "C_STATUS" : "Active" 
}] 

我需要这样的输出

[ 
    { 
     " _id" : "59b65ee33af7a11a3e3486c2", 
     "C_TITLE" : "Sweet and Snacks", 
     "C_PARENT" : "0", 
     "C_ICON" : "", 
     "C_IMAGE" : "59b65ee33af7a11a3e3486c2_sweets.jpg", 
     "C_STATUS" : "Active", 
     children:[] 


    } 
    ] 

基于Check C_PARENT和_id。

Answer 1

基本上，你需要，而不是

o[a.id] 

这

o[a._id] 

，因为你的数据有_id作为密钥ID。

另一个问题是与root的严格比较，那里你需要一个字符串作为值'0'，因为那是你的价值。

var data = [{ _id: "59b65ee33af7a11a3e3486c2", C_TITLE: "Sweet and Snacks", C_PARENT: "0", C_ICON: "", C_IMAGE: "59b65ee33af7a11a3e3486c2_sweets.jpg", C_STATUS: "Active" }, { _id: "59b663d709da571dc3d79f49", C_TITLE: "Groceries", C_PARENT: "0", C_ICON: "", C_IMAGE: "59b663d709da571dc3d79f49_grocery.jpg", C_STATUS: "Active" }, { _id: "59b6648209da571dc3d79f4a", C_TITLE: "Dals & Pulses", C_PARENT: "59b663d709da571dc3d79f49", C_ICON: "", C_IMAGE: "59b6648209da571dc3d79f4a_dals.jpg", C_STATUS: "Active" }, { _id: "59b6657509da571dc3d79f4c", C_TITLE: "Rice & Rice products", C_PARENT: "59b663d709da571dc3d79f49", C_ICON: "", C_IMAGE: "59b6657509da571dc3d79f4c_rice.jpg", C_STATUS: "Active" }], 
 
    result = function (array, root) { 
 
     var r = [], o = {}; 
 
     array.forEach(function (a) { 
 
      a.children = o[a._id] && o[a._id].children; // change to a._id 
 
      o[a._id] = a;        // change to a._id 
 
      if (a.C_PARENT === root) {     // strict comparison! 
 
       r.push(a); 
 
       return; 
 
      } 
 
      o[a.C_PARENT] = o[a.C_PARENT] || {}; 
 
      o[a.C_PARENT].children = o[a.C_PARENT].children || []; 
 
      o[a.C_PARENT].children.push(a); 
 
     }); 
 
     return r; 
 
    }(data, "0");          // "0" as root 
 

 
console.log(result);

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