Iterate through JSON

Question

i'm wondering how i could loop through this json data to get the values inside it with jquery? All i've got is undefined. I'm using $.ajax.get() to get the file then i'm trying to loop through it to get data inside it. The JSON looks like this...

The result from the get is a string!

 [ { "category": "anti-social-behaviour", "persistent_id": "", "location_subtype": "STATION", "month": "2012-11", "location": { "latitude": "52.6313999", "street": { "id": 1447707, "name": "Leicester" }, "longitude": "-1.1252999" }, "context": "", "id": 18782816, "location_type": "BTP", "outcome_status": { "category": "Under investigation", "date": "2012-11" } } ]

Regards /Haris!

Any chance to see some JavaScript code? jQuery AJAX methods decode JSON automatically... — Álvaro González
– Álvaro González, Commented Jan 4, 2013 at 12:17

sk8terboi87 ツ · Accepted Answer · 2013-01-04 12:16:16Z

3

Lets say you're getting through ajax call and youre json returned is on some var data, you can parse using $.each

$.each(data, function(i, obj) { //use obj.id and obj.name here, for example: alert(obj.name); });

answered Jan 4, 2013 at 12:16

sk8terboi87 ツ

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3 Comments

Ashwin Over a year ago

you answered that before me :)

sk8terboi87 ツ Over a year ago

:) just recently faced this prob :D

Rovdjuret Over a year ago

It seems $ajax is parsing it to string directly, how can i make it an object cuz i was trying your example before asking here and i guess its beacuse it not and object i get undefined...!

palaѕн · Accepted Answer · 2013-01-04 12:27:53Z

You can simply loop through the items like this:

$.each(obj, function(i, val) { alert(val.category); alert(val.location.latitude); alert(val.location.street.id); });

DEMO HERE

Saligor · Accepted Answer · 2013-01-04 12:16:56Z

You need to be sure that you have a json object and not a string. After:

for(var i in JSONObject){ // code goes here }

Remember that you can also call the elements in the object using it direct key value.

Exp. ObjName.keyname

JSON and object are contradictory terms. JSON is always a string.

Rovdjuret · Accepted Answer · 2013-01-04 12:25:11Z

Seems the problem was it of course wasn't an object and thats why i couldnt interate through the json... So i used: var obj = jQuery.parseJSON();

and everything works perfectly!

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