JS DOCUMENT METHOD EXAMPLE
Run 
<!doctype html>
	<head>
		<title>JS Document Methods Example</title>
	</head>
	<body>
		<h3>Document Methods Example</h3>
		<p id="demo">It Will change</p>

		<script>
		    // Open document
		    document.open();
		    // writing
			document.write("Hello" +"<br>");
			document.getElementById("demo").innerHTML = "Set by ID";
		</script>
	</body>
</html>