JavaScript Program Validate User Login
Write a JavaScript program check for valid user login.
Source Code
<html>
<head>
<title>Returning a value from a function</title>
<script>
function ValidateLogon(id,pwd)
{
var ReturnValue;
if (id == 'Admin' && pwd == '1234')
{
ReturnValue = true;
}
else
{
ReturnValue = false;
}
return ReturnValue;
}
</script>
</head>
<body>
<script language="Javascript" type="text/javascript">
var user;
var pwd;
var valid;
user = prompt('Enter user ID',' ')
pwd = prompt('Enter password',' ')
valid = ValidateLogon(user, pwd)
if ( valid == true)
{
alert('Valid Logon')
}
else
{
alert('Invalid Logon')
}
</script>
</body>
</html>
Output
