ImageElement constructor

ImageElement({String src, int width, int height })

Implementation 

factory ImageElement({String src, int width, int height}) {
  ImageElement e = JS('returns:ImageElement;creates:ImageElement;new:true',
      '#.createElement(#)', document, "img");
  if (src != null) e.src = src;
  if (width != null) e.width = width;
  if (height != null) e.height = height;
  return e;
}