如何更改JSON中字段的顺序 [英] How to change the order of the fields in JSON

问题描述

场景:考虑我有一个JSON文档，如下所示:

Scenario: Consider I have a JSON documents as follows:

   {
     "name": "David",
     "age" : 78,
     "NoOfVisits" : 4
   }

问题:我想更改文档中字段的顺序/顺序，例如我要age，NoOfVisits&然后最后是name.

Issues: I wanted to change the sequence/order of the fields in the document, say I want age, NoOfVisits & then lastly name.

到目前为止，我将值存储在临时变量中，删除了字段&重新创建相同的字段.由于重新分配不起作用:(

As of now I am storing the value in temporary variable, deleting the field & recreating the same field. Since the reassignment did not work :(

我是通过以下方式做到的:

I did it in following way:

    temp = doc["age"];
    delete doc['age'];
    doc["age"] = temp;

    temp = doc["NoOfVisits "];
    delete doc['NoOfVisits '];
    doc["NoOfVisits"] = temp;

    temp = doc["name"];
    delete doc['name'];
    doc["name"] = temp;

这样我将获得所需的有序JSON文档.这个要求很特殊，但是我仍然想要一些有效的解决方案

So that I will get the desired ordered JSON document. This requirement is peculiar kind but still I want some efficient solution

问题:有人可以以有效的方式帮助您达成目标吗?

Question: Can someone help out with efficient way to achieve the same?

推荐答案

也许您可以使用

May be you could change this using JSON.stringify()

喜欢

var json = {     "name": "David",     "age" : 78,     "NoOfVisits" : 4   };
console.log(json);
//outputs - Object {name: "David", age: 78, NoOfVisits: 4}
//change order to NoOfVisits,age,name

var k = JSON.parse(JSON.stringify( json, ["NoOfVisits","age","name"] , 4));
console.log(k);
//outputs - Object {NoOfVisits: 4, age: 78, name: "David"} 

将所需的键顺序放入数组中并提供给函数.然后将结果解析回json. 这是一个样本小提琴.

put the key order you want in an array and supply to the function. then parse the result back to json. here is a sample fiddle.

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