Images lazy loading

What it is ?

• Load images only when there could be visible on screen > to save bandwidth
• Display a placeholder or div wrapping the image before it load (need to know its proportion height x width)
• Could also display a loading effet, transition, spinner... when the image is actually loading

How

By not setting the src attributes of img tag, but settings it dynamically with js

Libs

• https://github.com/sinsunsan/archiref_wiki/wiki/Angular-libs---images