With a canvas you can animate your page. You can use images or draw geometric figures on the canvas. Here are some tutorials for canvas animation.

• Basic Canvas drawing.
• Canvas animation – see the video below.
• JavaScript and SVG (Peter Collinridge).

Parallax Effect ( Multilayer animation )

The following presentation is not strictly JavaScript but a sum up of a bunch of animation methods for the web:

• Google Animate Your HTML5.
• Using JavaScript to control SVG.