使用JSON的键值对 [英] Key value pairs using JSON

问题描述

是否有一种通过键/值对使用JSON对象处理数据结构的方法?
如果可以的话，可以详细说明如何从键

Is there a way to handle data structures using JSON object in a way of Key/ Value pairs?
If so can some one elaborate how to access associated value object from the key

假设我有这样的东西

KEY1 |  VALUE OBJECT1 - (NAME: "XXXXXX", VALUE:100.0)  
KEY2 |  VALUE OBJECT2 - (NAME: "YYYYYYY", VALUE:200.0)  
KEY3 |  VALUE OBJECT3 - (NAME: "ZZZZZZZ", VALUE:500.0)  

推荐答案

"JSON对象"实际上是矛盾的. JSON是一种文本格式，用于描述对象而不是实际对象，因此数据可以采用JSON形式，也可以反序列化为对象.

A "JSON object" is actually an oxymoron. JSON is a text format describing an object, not an actual object, so data can either be in the form of JSON, or deserialised into an object.

该JSON如下所示:

{"KEY1":{"NAME":"XXXXXX","VALUE":100},"KEY2":{"NAME":"YYYYYYY","VALUE":200},"KEY3":{"NAME":"ZZZZZZZ","VALUE":500}}

将JSON解析为Javascript对象(在下面的代码中称为data)后，您可以例如访问KEY2的对象及其属性，如下所示:

Once you have parsed the JSON into a Javascript object (called data in the code below), you can for example access the object for KEY2 and it's properties like this:

var obj = data.KEY2;
alert(obj.NAME);
alert(obj.VALUE);

如果键为字符串，则可以使用索引符号:

If you have the key as a string, you can use index notation:

var key = 'KEY3';
var obj = data[key];

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