JavaScript is very useful when it comes to checking HTML forms for valid entries. You can check that your visitors have filled in your forms correctly before they're transmitted over the Internet. The scripts are often activated when the Submit button is pressed. If there's a fault, they supress the transimission of the form contents and show an error message. Here's a selection of links to validation scripts and information. November 29, 2000
Phone Number Verification A sophisticated check for phone numbers. Since these might be long distance numbers or international numbers, the check's not too strict.
