Canvas : Canvas consists of a drawable region defined in HTML code with height and width attributes. JavaScript code may access the area through a full set of drawing functions similar to other common 2D APIs, thus allowing for dynamically generated graphics. Some anticipated uses of the canvas include building graphs, animations, games, and image composition.
Timed media playback
Offline storage database
Document editing
Drag-and-drop
Cross-document messaging
Browser history management
MIME type and protocol handler registration
