json array to javascript in phonegap

Question

<script type="text/javascript" src="jquery.mobile/jquery-1.7.2.min"></script>
<script type="text/javascript" src="docs/assets/js/jquery.jsonp.js"></script>
<script> 
     $(document).ready(function(){
            var output = $('#output');
            $.ajax({
                url: 'http://musi.php/?oper=getds&dev_id=f587&cur_id=2',
                dataType: 'jsonp',
                jsonp: 'jsoncallback',
                timeout: 5000,
                success: function(data, status){
                    $.each(data, function(i,item){ 
                        var landmark ='<h1>'+item.Nick_Name+'</h1>';
                        output.append(landmark);
                    });
                },
                error: function(){
                    output.text('There was an error loading the data.');
                }
            });
        });
</script>

i have a url(for eg) and its json values as follows:

{"RetVal":"Ok","ValueRsp":[{"Feedback_Id":"22","Customer_Id":"543","Feedback_Type_Id":"1","First_Name":"Tester Tester","Last_Name":"NA","Nick_Name":"Xgcfyxfu"}]}

error: invalid label
Line 1 [Break On This Error] 
{"RetVal":"Ok","ValueRsp":[{"Feedback_Id":"22","Customer_Id":"543","Feedback_Typ...

i need to parse it and use it in my app. i am new to javascript. kindly help

What exactly is wrong with the code you have? Do you get any error? We cannot help you if we don't know what the problem is. — Felix Kling
– Felix Kling, Commented Jan 21, 2013 at 11:40
invalid label {"RetVal":"Ok","ValueRsp":[{"Feedback_Id":"22","Customer_Id":"543","Feedback_Typ... — rOcKiNg RhO
– rOcKiNg RhO, Commented Jan 21, 2013 at 11:41
its a plugin which i got after googling it. but Retval is disturbing a lot — rOcKiNg RhO
– rOcKiNg RhO, Commented Jan 21, 2013 at 11:43
That sounds like the URL is not returning JSONP but JSON. You are telling jQuery to expect JSONP though. If the server does not support JSONP or CORS, you cannot access it via Ajax. Please refer to their developer/API documentation. Or is http://musi.php/ a Phonegap thing? It looks strange for a URL. If that's the case, see how you set up JSONP wit Phonegap. — Felix Kling
– Felix Kling, Commented Jan 21, 2013 at 11:49
@felix: musi.php i reterive data from it as its a api; and m using it for an app in phone gap — rOcKiNg RhO
– rOcKiNg RhO, Commented Jan 21, 2013 at 11:50

Adil · Accepted Answer · 2013-01-21 11:46:40Z

1

You can use jQuery.parseJSON

Live Demo

jsonobj = $.parseJSON('{"RetVal":"Ok","ValueRsp":[{"Feedback_Id":"22","Customer_Id":"543","Feedback_Type_Id":"1","First_Name":"Tester Tester","Last_Name":"NA","Nick_Name":"Xgcfyxfu"}]}');
alert(jsonobj.RetVal);
alert("jsonobj.ValueRsp[0].Customer_Id: " + jsonobj.ValueRsp[0].Customer_Id);

edited Jan 21, 2013 at 11:46

answered Jan 21, 2013 at 11:35

Adil

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12 Comments

rOcKiNg RhO Over a year ago

i have that format in a url; and i m nt able to use it to display in my html code

Felix Kling Over a year ago

jQuery will automatically parse it.

rOcKiNg RhO Over a year ago

jsonobj you have used this ; but i need to retrive values from a url . wat fr that?

rOcKiNg RhO Over a year ago

@FelixKling: will you please elaborate or kindly help me in doing so

Felix Kling Over a year ago

@rOcKiNgRhO: There is not much we can do. See whether the server supports JSONP (read their API documentation) and what exactly you have to do for it to make it work. If they don't support JSONP or CORS, you'd have to use your server as a proxy. If you have control over the other server though, you can set it up to support JSONP. There are many questions about making Ajax requests to external domains, search for them.

|

hereandnow78 · Accepted Answer · 2013-01-21 11:35:54Z

0

a little bit of googling would have done it...

var obj = JSON.parse(yourString);
// now use obj.RetVal

answered Jan 21, 2013 at 11:35

hereandnow78

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Comments

SHANK · Accepted Answer · 2013-01-21 11:36:55Z

0

you can use the function:

var json_obj = JSON.parse("correct_json_format_string");

now you can use the json_object ot access all the properties:

var return_value = json_obj.RetVal;

Hope that helps.

answered Jan 21, 2013 at 11:36

SHANK

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