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.

I understand your question but in your case this can be done.. response.data[2-1].value — Mr_Green
– Mr_Green, Commented Aug 19, 2013 at 5:09

dwerner · Accepted Answer · 2013-08-19 05:36:42Z

7

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, 2013 at 5:36

answered Aug 19, 2013 at 5:16

dwerner

6,6324 gold badges32 silver badges44 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

dwerner Over a year ago

Not at all! You made my answer better for me.

Nelaina · Accepted Answer · 2015-03-13 19:33:36Z

2

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.

edited Mar 13, 2015 at 19:33

answered Aug 19, 2013 at 5:06

Nelaina

17.9k29 gold badges118 silver badges164 bronze badges

Collectives™ on Stack Overflow

Getting specific value from JSON using javascript

2 Answers 2

1 Comment

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Linked

Related