how to show a javascript warning message for some specific words from a textfield.
if a user write http:// and / in a textfield and click on the Submit button of my form then a javascript will show a error message to the user and submission will stop. How to do it? Please give me a example regarding this.
How i should edit this below given code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Javascript warning</title>
</head>
<body>
<form name="formSurfwebtips" style="display:inline" method="post" action="http://example.com/sendmail.php">
<h1>Demo form</h1><br />URL<br />
<input name="reciprocal" type="text" value="http://" size="43" />
<input type="submit" name="Submit" value="Go to form" /></p>
</form>
</body>
</html>Thanks