j4 48.html

<html>
	<head>
		<script>
		// variable in javascript and comment
		function myfun() {
			var a = 5;
			var b = 45;
			var char = 'd';
			var name = "ahtasham";
			var c = b/a;
			document.write(c); 
			document.write("<br>")
		//	document.write("?");
			document.write(name);
		//	window.alert(char);

		}
		
		</script>
	</head>
	<body>
		<button onclick="myfun();">click button</button>


	</body>
</html>