How to clear the canvas for redrawing

Question

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

I need to clear th

Answer 1

fastest way:

canvas = document.getElementById("canvas");
c = canvas.getContext("2d");

//... some drawing here

i = c.createImageData(canvas.width, canvas.height);
c.putImageData(i, 0, 0); // clear context by putting empty image data