The typical (and original AJAX) approach to calling web services asynchronously from a browser uses the XMLHTTPRequest object to request data asynchronously. However, as most of you probably already know, requests made using this object are restricted to the same domain as the script they originate from. This means that in order to request data from services like Google Maps, Flickr, etc. you need to implement a server-side proxy on your domain to use the XMLHTTPRequest object. But what if you want to stay on the client side? Enter JSON injection.
