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Forms JavaScript Code Snippets
These snippets (and a few tutorials) all deal with Javascript forms. We’ll show you some really neat forms that keep you from receiving bogus information as well as others that are just fun to play with (test personal info).
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Collecting e-mail addresses in a form are important as they are generally the only method of contacting the user. This script will verify an e-mail address is entered correctly by requiring the user to re-enter the address, checking to make sure there is no typographical error. This script can also be used for passwords or other information that must be verified before being submitted.
Let Javascript help you receive feedback from your visitors. The script also requires that all fields must be completed before the form is submitted. Great!
Validation library and visual tool to assign validation to any form
Validate dates in your form using this universal script. Will work with any date format and the code is fully commented for easy modification. Great!
Checks any or all elements of a form, if parameters are not met, prompts user for the information and automatically updates the form. NS3, NS4, IE3 & IE4 compatible
Validating an email address in HTML5 is very simple.
Ensure that your visitors enter a properly formatted 5 digit, or 5 digit+4 zip code. The visitor is alerted if any information is invalid and asked to try again. Cool!
This script verifies that a string looks like a real e-mail address.
This script verifies that a string is numeric, otherwise it deletes the non-numeric character.
This function verifies that a string is a valid time, in the form hh:mm:ss am/pm, where seconds are optional. It accepts military time (hour between 0 and 23) as long as am/pm isn’t specified. It requires am/pm when the hour is less than or equal to 12.
Validates date in form (date must be on or before current date). Checks days in February and formats dates as xx/xx/xxxx
This script works like our Password Verifier, however, it also checks for a minimum length and invalid characters.
Use JavaScript to ensure that visitors choose both a radio button and a checkbox. Invalid submissions are cancelled.
Input the Social Security Number using either the 9 digit or NNN-NN-NNNN format. The number ranges can be easily changed by the S.S.A, so this is not checked.