CODEWITHSUNDEEP
jqueryajaxjson
Zac
Zac

Reputation: 12846

Why do the occasional ajax requests return an error response?

This bug is really frustrating me and I am hoping the fine folks here at SO can help at least give me some clues as to what to look for. I have set up an order tracking system using ajax and it works with like 95% of the requests. However some are running the function that is in the error response.. for example : 

function trackIt(){
    $j("#result").html(" ");
    $j("resultTwo").html(" ");
    var ordervalue = $j('#order').val();
    if ((ordervalue.length == 9) || (ordervalue.length == 5)) {
        $j.ajax({
            type: 'GET',
            url: '<?php echo Mage::getBaseUrl('web') ?>/index/trackOrder',
            data: 'increment_id='+ ordervalue,
            dataType: 'json',
            beforeSend: function() {
                $j('#result').html('<img src="loading.gif" alt="" />');
            },
            success: tracker,
            error : function (xhr, status, error) {
                wtf();
            }
        });
    } else { return false; };
};

I can see in firebug that the json data is returning as it should but for a couple of tracking numbers it is running the wtf function?! WTF? What else can I look for? Why is it considering some requests an error? What can I look for? Is there something wrong with how I am making these requests? Let me know if you need more information or anything to help you help me.

Thanks in advance for any help.. all I want for Christmas is for this damn thing to work!

Edit :

Here is an example of the JSON response that is not being returned. 

{"Debug":"3","Status":"Closed","Date":"2011-12-15T22:53:09","Description": "<div class=\"orderProduct\">Sector 9 J-Bay Bamboo Longboard  - Color: ASSORTED, Size: 10</div><div class=\"orderProduct\">Kahuna Haka Cruiser Skateboard  - Color: ASSORTED, Size: ONE SIZE</div><div class=\"orderProduct\">Santa Cruz Primo Pintail 9.9" Longboard Cruiser  - Color: ASSORTED, Size: ONE SIZE","ProcessorId":"0","Sku": "16389400070018<br>17748800070018<br>18777606960012","Method":"Free Shipping","ShippingCo":"UPS Ground","Track":""}

Here is an example of one that is being returned.

{"Debug":"1","Status":"Closed","Date":"2011-12-15T22:33:32","Description": "<div class=\"orderProduct\">Supra Dixon Black Canvas Shoe  - Color: BLACK, Size: 12","ProcessorId":"0","Sku": "16086200010046","Method":"Ship To Store - In Store Pickup","ShippingCo":"Ship To Store - In Store Pickup","Track":"1Z68W0376038395"}

One obvious difference is that debug value which unfortunately I have no idea what that means.

Upvotes: 0

Views: 106

Answers (1)

jfriend00
jfriend00

Reputation: 707976

Your example of JSON that causes the error is invalid JSON. Right around here:

>Santa Cruz Primo Pintail 9.9" Longboard Cruiser  - Color:

it goes wrong.

I'm not sure exactly what it's supposed to be, but I would presume the JSON parser is throwing an error because of the bad JSON.

Upvotes: 1

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