What is this web page background ad called and how does it work?
January 8, 2014 10:33 AM Subscribe
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(HuffPo), I see a dynamic background ad for Chicago PD that changes as you scroll down. I noticed it because it defied my AdBlockPro. What is it called? How does it work?
It's not just a changing background, but there are different layers of animation present.
I used to be a web designer and left the industry before the really neat stuff started to happen. But I'm still amazed by the great things that I see. If I wanted to create something like this, where would I start, language-wise?
(This ad campaign might only run once per user as I had to clear cookies to see it again.)