How do I add a simple onClick event handler to a canvas element?

Question

I\'m an experienced Java programmer but am looking at some JavaScript/HTML5 stuff for the first time in about a decade. I\'m completely stumped on what should be the simple

Answer 1

As another cheap alternative on somewhat static canvas, using an overlaying img element with a usemap definition is quick and dirty. Works especially well on polygon based canvas elements like a pie chart.