Getting specific value from JSON using javascript

Question

I am using ajax to get a small set of data back from the server which returns JSON data with the following format:

{
    "data": [
        {
            "id": "1",
            "value": "One"
        },
        {
            "id": "2",
            "value": "Two"
        },
        {
            "id": "3",
            "value": "Three"
        }
    ]
}

On the client side, this is assigned to a variable named response. I use response.data to get the contents.

The question is, is there an easier way to get the value without doing a loop? I'm kinda looking for something like this response[id==2].value which should give me "Two".

I'm open for any suggestions if this is not possible.

duplicate? http://stackoverflow.com/questions/8481380/is-there-a-json-equivalent-of-xquery-xpath — Oleg Mikheev, Aug 19 '13 at 05:05
I understand your question but in your case this can be done.. `response.data[2-1].value` — Mr_Green, Aug 19 '13 at 05:09
[http://jsfiddle.net/uHbZt/8/](http://jsfiddle.net/uHbZt/8/) This? — , Aug 19 '13 at 05:17

dwerner · Accepted Answer · 2013-08-19T05:36:42.787

5

You could take a functional approach and use the Array.filter method:

var matchingResults = JSON['data'].filter(function(x){ return x.id == 2; });
// procede to use matching elements...

edited Aug 19 '13 at 05:36

answered Aug 19 '13 at 05:16

dwerner

6,462
4
30
44

Not at all! You made my answer better for me. – dwerner Aug 19 '13 at 05:35
This solution makes my life brighter. Thanks! – Sa'ad Abdurrazzaq Sep 29 '21 at 03:56

CorayThan · Answer 2 · 2015-03-13T19:33:36.917

If you parse it into a javascript object using something like jQuery's json parse method, you could just reference the various items in the array like a normal javascript array.

Do it like this:

var dataArray = $.parseJSON(myJson).data;

var theFirstData = dataArray[0]; //get the data with id "1"

Alternately, if you don't want to use jQuery, you can use JSON.parse(jsonToParse). Here're the docs for that method.

Getting specific value from JSON using javascript

2 Answers2

Linked