ISE LAB PROGRAMS : ip lab program to check and validate the usn and semester in javascript

Saturday, 17 November 2012

<?xml version="1.0" encoding="utf-8"?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML1.1//EN"

"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<head>

function match()

{

var usn,sem,s1,s2;

usn=document.getElementById("USN").value;

sem=document.getElementById("SEM").value;

s1=usn.search(/^[1-4][A-Z]{2}[0-9]{2}[A-Z]{2}[0-9]{3}$/);

if(s1>=0)

alert("This is a valid Usn number");

else

alert("This is not a valid Usn number");

s2=sem.search(/^[1-8]$/);

if(s2>=0)

alert("This is a valid semester");

else

alert("This is not a valid semester.It must be a number between 1 and 8");

}

</script>

</head>

<body>

<p>semester:<input type="text" id="SEM" /> </p>

</form>

</body>

</html>