# A basic demo of Web Workers

This is basic demo of using Web Workers (which are child threads) to generate a random value which is posted back to the main thread (this page). The value is then used to update the Gauge. To make a useful example you could use the child thread in conjunction with Web Sockets to retieve (for example) load values from your server(s). Also, to retrieve data from your server you may find it easier and less involved to use AJAX.

See also:

- Article about Web Workers on html5rocks.com