tee wrote:
Hi, I have a question about server-side vs client-side validation. I always use a same PHP form script that works really great and it's server-side validation using condition and requirement, and I like the feature better than client-side's. A website I was working on, client wants client-side validation, something fancy, something Ajax. I like to stick with this form script because it has a great support for anti-spam; I suppose I can turn off the server-side validation if client-side validation is used, but I am concerned with the accessibility issue - I am particular curious how screen readers treat client-side validation.
As important as accessibility is, there is an issues many times more important which is relevant to your question: security. Unless you implement sever-side validation (either in addition to client-side, or instead of), neither yours, nor your visitors data is safe. For example, via SQL injection your database can become an open book to a cracker.
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