For detecting when an image has completed downloading which method should I use?
image.onload = function () {}
or
image.addEventListener(load, function () {} );
onload:
onload property.addEventListener:
attachEvent).removeEventListener() which requires info identifying the original eventListener.If addEventListener is supported and you only need one listener, then you can use either.
If it's a simple self-contained piece of code that nobody else will be messing with then, there's no issue with using onload. If it's a more complex piece of software that other developers may mess with and any kind of extensibility is desired and you have cross browser support for event listeners, then addEventListener() is more flexible and is probably more desirable.
