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Gracefully Degrading AJAX Form
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12/31/2005 By CYCLOMEDI A
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AJAX brings a much more fluid level of interaction to web pages than the post-wait-redraw of old. but if a user has an old and/or incompatible browser, or has javascript turned off for security purposes then AJAX will break. I built this form from the lowest level to start with. the classic "send the user back to the page until they're filled it in properly", i then added each level of javascript culminating in the AJAX round trip. try turning javascript off in your browser and see if it works, i'm be very interested in tests from older browsers, this could be expanded to include wap/handheld browsers and even text based browsers.
This form has four levels of degradation:
Browser Supports Javascript, DOM and AJAX
Browser Supports Javascript and basic DOM styling
Browser Supports Javascript
Browser Does not support Javascript
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