在 Javascript 中构建嵌套对象 [英] Build Nested Object in Javascript

问题描述

我试图构建一个嵌套对象，我会尽量让自己清楚.

我有这个 json 结构:

<代码> {"origin.geo.country": "美国","origin.geo.state": "纽约",origin.geo.zip":4444，"user.name": "迈克尔","user.surname": "约旦"}

我需要一个输出如下内容的函数:

<预><代码>{起源: {地理:{国家:美国"，状态:纽约"，邮编:4444}},用户:{姓名:迈克尔"，姓氏:乔丹"}}

我知道我必须使用递归来实现这一点，但我无法对其进行编码.你们能帮我解决这个问题吗?

谢谢.

解决方案

各位，

@Ben Beck 的回答帮助了我.

我只需要对函数做一些小改动:

function (path,value,obj) {var parts = path.split("."), part;//引用父对象var 父 = obj;while(part = part.shift()) {//这里我检查属性是否已经存在if(!obj.hasOwnProperty(part)) obj[part] = {};//如果是我设置 prop 值的最后一个索引if(parts.length === 0) obj[part] = value;obj = obj[部分];//更新指针"}//最终返回填充的对象返回父母；}

I trying to build a nested object, I'll try to make myself clear.

I have this json structure:

 {
      "origin.geo.country": "USA",
      "origin.geo.state": "NY",
      "origin.geo.zip": 4444,
      "user.name": "Michael",
      "user.surname": "Jordan"  
}

And I need a function that outputs something like this:

{
     origin: {
         geo: {
             country: "USA",
             state: "NY",
             zip: 4444
         }
     },
     user: {
         name: "Michael",
         surname: "Jordan"
     }
 }

I know i have to use recursion to achieve this, but I'm not able to code it. Can you guys help me with this?

Thanks.

解决方案

So guys,

@Ben Beck answer helped me.

I just need to make some minor changes to the function:

function (path,value,obj) {

    var parts = path.split("."), part;

    //reference the parent object
    var parent = obj;

    while(part = parts.shift()) {

        // here I check if the property already exists
        if( !obj.hasOwnProperty(part) ) obj[part] = {};

        // if is the last index i set the prop value
        if(parts.length === 0) obj[part] = value;

        obj = obj[part]; // update "pointer"
    }

    //finally return the populated object
    return parent;

}

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