rwaldron/index.html

## index.html
<!DOCTYPE html>
<html>
  <head>
    <title>Workers: Basic Demo</title>
    <script>

    document.addEventListener('DOMContentLoaded', function () {

	var worker  = new Worker('worker-javascript-file.js');

	worker.postMessage('Hello Worker!');

	worker.addEventListener('message', function (event) {

		console.log(event.data); // will log "Hello Main Window!"

	}, false);

     }, false);

    </script>
  </head>
  <body>


  </body>
</html>

## worker-javascript-file.js
self.addEventListener('message', function (event) {

  this.postMessage(  event.data.replace('Worker', 'Main Window')  );

});
	<!DOCTYPE html>
	<html>
	<head>
	<title>Workers: Basic Demo</title>
	<script>

	document.addEventListener('DOMContentLoaded', function () {

	var worker = new Worker('worker-javascript-file.js');

	worker.postMessage('Hello Worker!');

	worker.addEventListener('message', function (event) {

	console.log(event.data); // will log "Hello Main Window!"

	}, false);

	}, false);

	</script>
	</head>
	<body>


	</body>
	</html>
	self.addEventListener('message', function (event) {

	this.postMessage( event.data.replace('Worker', 'Main Window') );

	});