Formatting and Validating Strings
Regular expressions can be used to simultaneously format and validate an entered value. In Script 8.7, the user enters a phone number in any format. Either the end result will be a formatted phone number or the input box will turn red and the label will turn red and bold.
Script 8.7. This script validates and formats a user-entered phone number.
window.onload = initForms; function initForms() { for (var i=0; i< document.forms.length; i++) { document.forms[i].onsubmit = function() {return validForm();} } } function validForm() { var allTags = document.getElementsByTagName("*"); for (var i=0; i<allTags.length; i++) { validTag(allTags[i]); } return false; function validTag(thisTag) { var outClass = ""; var allClasses ... |
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