Lazyloader is inspired by YUI ImageLoader Utility by Matt Mlinac. After reading YUI introduction I though this is cool! After reading through source thought changed to this needs some jQuery simplicity So I
stole borrowed couple of great ideas from Matt’s code. Result is Lazy Load plugin for jQuery.
It delays loading of images in (long) pages. Images below the fold (far down in the page) wont be loaded before user scrolls down. This is exact opposite of image preloading. With long pages containing heavy image content end user result is the same. Page feels snappier. Browser is in ready state after loading visible images. No need to wait for n pictures to load.
From Wikipedia: Lazy loading is a design pattern commonly used in computer programming to defer initialization of an object until the point at which it is needed. It can contribute to efficiency in the program’s operation if properly and appropriately used.
That said Matt’s code does much more. I was only after lazy loading and simplicity of use. If you need more features go for YUI.
Related entries: Sequentially Preloading Images With jQuery