How to clear the canvas for redrawing

Question

Hi there,

After experimenting with composite operations and drawing images on the canvas I'm nog trying to remove images and compositing. How do I do this?

I need to clear the canvas for redrawing other images; this can go on for a while so I don't think drawing a new rectangle every time won't be the most efficient option.

Thanks!

Answer 1

context.clearRect ( x , y , w , h );

or

canvas.width = canvas.width;

Answer 2

in webkit you need to set the width to a different value, then you can set it back to the initial value