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| | Form Validation |
 | | Any sort of interactive site is going to have form inputs — a place where your users input who they are, what they want to buy, where they live, and so forth. |
 | | button on the form, the form data is sent to a JavaScript validation function that checks each aspect of the input to make sure that it is in the appropriate format. |
 | | As always, remember to validate important form data on the back end as well, because most efforts at client-side validation can be spoofed. |
| developer.apple.com /internet/javascript/validation.html (1901 words) |
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