<html>
<head>
<title>user_login</title>
<script language="javascript" type="text/javascript"/>
function validate()
{
if(document.getelementByID('t1').value.length==0)
{
alert(" username is required");
return false;
}
else {
if(document.getelementById('t2').value.length==0)
alert("password is requires");
return false;
}
alert("login successfully");
return true;
}
</script>
</head>
<body>
<form name="frm" action="validation in js.php" method="post">
Enter Username <input type="text" name="t1" id="t1"/>
Enter Password <input type="password" name="t2" id="t2"/>
<input type="submit" name="S1" id="S1" value="Register"
onclick="return validate()"/>
</form>
</body>
</html>
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