Using regular expressions to validate an email : Regular Expressions « Development « JavaScript DHTML

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JavaScript DHTML » Development » Regular Expressions 
Using regular expressions to validate an email
   
<HTML>
<HEAD>
<TITLE></TITLE>
<SCRIPT LANGUAGE="JavaScript" TYPE="text/javascript">

function validateEmail(input) {
    var emailPattern = /^\w+@\w+(\.\w{3})$/
    if (emailPattern.test(input)) {
        document.write("valid")
    }
    else {
        document.write("NOT valid")
    }
}

</SCRIPT>
</HEAD>
<BODY>
<FORM>
Please enter an e-mail address and click somewhere else on the page:
<INPUT TYPE="text" SIZE="25" onBlur="validateEmail(this.value);">
</FORM>
</BODY>
</HTML>

   
    
    
  
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