Cross domain tracking pixel implemented using ASP.NET, jQuery, and AJAX technology

Currently, I have a page tracking system that uses $.post(PAIRS-DATA) in JavaScript to send collected information back to the server and load as a tracking pixel.

        finally
        {
            //tracking pixel
            Response.ContentType = "image/gif";
            byte[] buffer = pix.BinaryData;
            int len = buffer.Length;
            Response.OutputStream.Write(buffer, 0, len);

        }

The issue is that $.post(PAIRS-DATA) is being canceled in Chrome due to cross-domain restrictions. To address this, I attempted

         $.ajax({
            type: "POST",
            dataType: "jsonp",
            jsonp: false,
            processData: false,
            crossDomain: true,                
            url: "URL",
            data: dataPairs
        });

While this fixes the cross-domain problem, it now results in "Resource interpreted as Script but transferred with MIME type image/gif:"

How can I resolve this? Is there an issue with the $.ajax call?

Answer №1

The reason why your ajax call is not working is because JSONP requires the server to return JSONP which includes a wrapper.

If you need to gather data using JS before loading the image, you can attempt sending the necessary data in the query string for the image.

For instance:

$(document).append('<img src="http://host.com/path/to/image?' + formatDataAsQueryString());

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