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$.getJSON() Usage

in Getting Started • 10 years ago

I'm trying to use the ".getJSON()" method for the first time and so far I'm not getting anything out of it. I know the callback function for it is supposed to be called when the call succeeds, but can I also code an error callback function for it, or instead of doing that should I just use the more general ajax method and then code callback functions for both success and error, and make the dataType JSON? Thanks for the help.

Replies(13)

n0vice.1

Re: $.getJSON() Usage - Can Someone Explain What This Returned Data Means

10 years ago

So instead of continuing with using $.getJSON() I tried using the AJAX method as shown coded below:

${esc.d}.ajax( { url: targetUrl, type: "GET", dataType: "JSON",
        success: function(data)
                 {
         alert("GOT JSON CALL SUCCESS RESPONSE!...");
     },
  error: function(jqXHR,textStatus,errorThrown)
           {
         alert("GOT JSON CALL ERROR RESPONSE..jqXHR="+jqXHR+" TEXT-STATUS="+textStatus+" ERROR-THROWN="+errorThrown+"!...");
     }
});

I got the following data back from the above coded "error" callback:

jqXHR=[object Object] TEXT-STATUS=parsererror ERROR-THROWN=SyntaxError: JSON.parse: unexpected character

did I get this error because I shouldn't have even coded the "error" callback for an "ajax()" method call (according to the documentation) or because there actually was a problem with what I'm passing to the "ajax()" method? I'm confused. Can someone pleas explain where my problem is?

Thanks.

Kevin B

Re: $.getJSON() Usage

10 years ago

There's a problem with the JSON that is being returned.

-- Kevin

n0vice.1

Re: $.getJSON() Usage

10 years ago

Is there anyway to further determine what the problem may be by somehow looking at the raw data coming back? I've also looked for "parse error", "syntax error", and "unexpected character", all from the error data returned, in the documentation without finding anything useful. So do I need to be looking for those things in JQuery or in Javascript?

Thanks for the help.

Kevin B

Re: $.getJSON() Usage

10 years ago

navigate to the url you are requesting from directly using your browser, and paste the results here

the error you are getting basically means your JSON is invalid. Therefore, your problem is neither in javascript nor jQuery.

-- Kevin

n0vice.1

Re: $.getJSON() Usage

10 years ago

ok back in a few minutes with the response

n0vice.1

Re: $.getJSON() Usage

10 years ago

OK. Here's the part the response html from the original target page which my proxy page is supposed to be bringing back:

table width="100%">

div id="detailData" >

tr>