Reusing P2’s ajaxUrl Short-Circuits Other AJAX Requests

I just spent awhile tracking down some odd AJAX¬†behavior that was puzzling me, so I thought I’d share the solution. I was working on a plugin to extend P2¬†and my AJAX requests were always responding with -1. After a lot of digging and some trial-and-error, I figured out that it was happening because I was […]

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admin-ajax.php Response Fails When Called from Domain Alias

I’m writing a WordPress plugin that uses AJAX and I had everything setup and working fine for awhile. I came back to the code a few hours later and all of the sudden I was getting a failed response, even though the code hadn’t changed. I got the correct JSON response when I loaded the […]

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Cross-Domain AJAX Requests

Browsers prevent standard AJAX calls across domains for security reasons, but you can make JSONP calls instead. If you’re using jQuery you just need to add ‘callback=?’ to the url: Then setup the request handler to prepend the callback parameter to the response and wrap it in quotes: If you’re using Firebug to monitor the […]

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