Color explorer This one is just fun for me and an example of heavy radio button use. I think it can be simplified. Image play The use of arrays in javascript can allow slide shows, for example. This page Even this intro page has a bit of javascript in it. Date and Time Javascript comes with some useful built-in object besides the web pages themselves.
Web pages can create web pages without calling a server.
Virtual pieces However, useful javascript code can be stored on the server for use in many web pages, e.g., a common 'look and feel'. Javascript can communicate with java applets, something that I think ought to be useful. A more interesting example of javascript and applet combination. To see the applet code .