jQuery lazy loading

Loading the library

Targeting it…and callbacks

Specifying the images

Since your jQuery targets class lazy, we must use lazy for classes on img and div tags.
You use data-src to specify the location of the images.

Note that for img tags, when the images load, it will change to data-src will change to src.
However, if you were to use div, data-src will change to background-image: url(….) .