Web-Programming-Lab/lab2b.html at master · ritesh-29/Web-Programming-Lab · GitHub

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<?xml version="1.0" encoding="UTF-80"?>
<!DOCTYPE html PUBLIC"-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
	<head>
		<script type="text/JavaScript">
			function validateFields(elem1,elem2)
			{
				var alphaExp=/^[1-4][a-zA-Z][a-zA-Z][0-9][0-9][a-zA-Z][a-zA-Z][0-9][0-9][0-9]$/;
				var sem=/^[1-8]$/;


				if(!elem1.value.match(alphaExp) && !elem2.value.match(sem))
				{
					alert("Invalid usn\Invalid sem");
					return false;
				}
				else if(!elem1.value.match(alphaExp) && elem2.value.match(sem))
				{
					alert("Invalid usn\Valid sem");
					return false;
				}
				else if(elem1.value.match(alphaExp) && !elem2.value.match(sem))
				{
					alert("Valid sem\Invalid usn");
					return false;
				}
				else
				{
					alert("Valid usn\Valid sem");
					return true;
				}
			}
		</script>
	</head>
	<body>
		<form>
			<label>Enter your usn:<input type='text' id='usn'/></label>
			<label>Enter your sem:<input type='text' id='sem'/></label>
			<input type='submit' onclick="validateFields(document.getElementById('usn'),(document.getElementById('sem'))" value='Submit'/>
		</form>
	</body>
</html>