Firefox throwing a exception with HTML Canvas putImageData

Question

So I was working on this little javascript experiment and I needed a widget to track the FPS of it. I ported a widget I\'ve been using with Actionscript 3 to Javascript and

Answer 1

I was having similar problem with drawImage(), when attempted to draw a tile on a canvas of the same size in this manner:

var image = new Image();
     image.onload = function() {
         context.drawImage(image, 0, 0, this.tileSize, this.tileSize);
       }
     image.src = this.baseURL + tileId;

The problem disappeared, when I removed height and width parameters from the call and used this:

context.drawImage(image, 0, 0);