Untitled

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Login and Sign Up - Page</title>
		<script type="text/javascript">
			function validateForm()
			{
				if (document.getElementById('username').value=="") //username check
				{
					alert("Username is required");
					return false;
				}
				if (document.getElementById('fullname').value=="") //full name check
				{
					alert("Full name is required");
					return false;
				}

				//check that password is long enough and that the two passwords match
				var phoneno = "/^\(?([0-9]{3})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$/";
			  	if(string(document.getElementById(telephone)).value.match(phoneno))
			    {
			      return true;
			    }
			  	else
			 	{
				alert("phonenumber did not meet the given form");
			  	return false;
			 	}

				//check that password is long enough and that the two passwords match
				var passw=  /^[A-Za-z]\w{7,14}$/;
				var inputtxt1 = document.getElementById(password1);
				var inputtxt2 = document.getElementById(password2);

				if(inputtxt1.value.match(passw))
				{
					if ((inputtxt1 == inputtxt2))
					{
						return true;
					}
					else
					{
						alert("The two passwords you entered do not match.");
						return false;
					}
				}
				else
				{
				alert("Password needs to be at least 7 characters long.");
				return false;
				}

				//check that the email contains a domain name
				var mailformat = "/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/";
				if(document.getElementById(email).value.match(mailformat))
				{
					return true;
				}
				else
				{
					alert("You have entered an invalid email address.");
					return false;
				}

			}
  //action="login.php" action="register.php"
	</script>
</head>
<body>
<h1>login and Register Page</h1>
<h2>Login</h2>
<br>

<form method="post" >
	Username: <br>
	<input type="text" id="loginusername" name="username" required>
	<br>
	Password: <br>
	<input type="Password" id="loginpassword" name="password" >
	<br>
	<input type="submit" value="Log in">
</form>
<br>
<h2>Sign up</h2>
<form method="post"  onsubmit="return validateForm()" autocomplete="off" >
	Username: <br><input type="text" name="username" id="username"><br>
	Full name: <br><input type="text" name="fullname" id="fullname"><br>
	Telephone number: <br><input type="text" name="telephone" id="telephone"><br> in format XXX-XXX-XXXX <br>
	Email Address: <br><input type="text" name="email" id="email"><br>
	Password: <br><input type="text" name="password" id="password1"><br> minimum of seven characters <br>
	Rewrite password: <br><input type="text" name="password" id="password2"><br>
	<input type="submit" value="Submit" name="submit_userinfo" id="submit">

</form>

</body>

</html>