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Required field(s) validation
One of the most popular form validation tasks is to check that important fields within a form have been filled out by the user. This is a generic script that will do just that, by verifying that mandatory fields are filled in before form submission.
URL: http://www.dynamicdrive.com/dynamicindex16/requiredcheck.htm
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Cost: N/A Platforms: N/A Version: N/A