JavaScript Made Easy: Free JavaScripts Tutorials Example Code

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JavaScript Basics

Inserting Javascript

Complete Tutorial

Advance DHTML Tutorial


E-mail Address Validation 2

Once more e-mail validator. This script willn't allow a user to type incorrect e-mail address in your form (in a reasonable limits of course) Enter an Email Address :


Insert into <HEAD>
<script language="javascript"> function checkemail(str) { var r1 = new RegExp("(@.*@)\|(\\.\\.)\|(@\\.)\|(^\\.)"); var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}\|[0-9]{1,3})(\\]?)$"); var isOK = !r1.test(str) && r2.test(str); if (!isOK) alert('Invalid Email!'); return isOK; } </script>

Insert into <BODY>
<form method="post" action="#" onSubmit="return checkemail(this.email.value)"> <p>Enter an Email Address : <input type="text" id="email"> </p> <p> <input type="submit" id="submit" value="Submit"> </p> </form>

Other Options