AJAX is easy. It’s just javascript talking to your server to grab a little bit of content instead of the browser grabbing the whole thing. With this in mind, let’s get to work and build a simple AJAX application that will work with javascript turned off. We’ll do this by assuming that there is no javascript in your user’s browser, then use jQuery to change the DOM to add in the behaviours.
Effective browser support
Paul Boag has written an excellent article about why you shouldn’t have a bunch of ’supported browsers’, you should write clean HTML and CSS with NO HACKS. Then more advanced features like rounded corners in CSS3 for browsers that support it. And the stupid browsers will ignore the enhancements, but still be usable and accessible.
