Print a specific div in html

index.html

	<script>
		function printDiv(divName){
			var printContents = document.getElementById(divName).innerHTML;
			var originalContents = document.body.innerHTML;
			document.body.innerHTML = printContents;
			window.print();
			document.body.innerHTML = originalContents;
		}
	</script>
<h1> do not print this </h1>

<div id='printMe'>
  Print this only 
</div>

<button onclick="printDiv('printMe')">Print only the above div</button>