Comment by cmorgan31
11 years ago
You'll see similar resource consumption when using event listeners tied to the mouse movement. It's generally not noticed by the general populace, but gives every developer a pause. The page does seem to struggle at times.
Very informative, thanks. In native land we can listen to mouse motion but it is more CPU friendly to have a timer and poll the mouse position periodically, particularly if the location of the cursor causes further processing (like working out what data to display in a popup hint). The good thing with the mouseEnter / mouseLeave is that you can stop the timer and only restart polling when they enter again.
Is there a way of doing this on web pages or is it really still just callbacks for mouse motion?