To use this page, click "Direct Poll" to see how directly hitting a web service synchronously without a web worker halts the orange box's animation.

To switch to a web worker, click "Start Worker" and notice the animation is no longer affected by a synchronous call to a web service, since the call is made in a different thread.

Turning on local storage will save any random strings that are added to the page in your browser's local storage cache. You can refresh the page, even close the browser and re-open it, and the previously fetched data will be restored.

NOTE: Of course you wouldn't normally poll a webservice synchronously, this was done for demonstration of web workers only.