samccone/jquery_lazyload — comment on commit a12e52ab87224c902512e3791ae5dbef51bf871a
File:  line 0
By samccone:

true, but lets think of it from an abstracted point. say a site is using lazy load, and someone wants to hook into this event. Right now they would have to hook into the callback , while with an event it allows a separation between the constructor code and the event handling code. Which I find nice.

So ... you can have a function that blindly builds lazy load while in another place in the code you can set your eventlisteners.

Just my opinion