Recent Features
![Page Visibility API]()
Page Visibility API
One event that's always been lacking within the document is a signal for when the user is looking at a given tab, or another tab. When does the user switch off our site to look at something else? When do they come back?
![CSS Animations Between Media Queries]()
CSS Animations Between Media Queries
CSS animations are right up there with sliced bread. CSS animations are efficient because they can be hardware accelerated, they require no JavaScript overhead, and they are composed of very little CSS code. Quite often we add CSS transforms to elements via CSS during...
Incredible Demos
![Sara Soueidan’s Favorite CodePen Demos]()
Sara Soueidan’s Favorite CodePen Demos
A few months ago, Chris Coyier shared his favorite CodePen demos right here on David's blog. A while back David asked me to share some of my favorite pens too, so here are some of the demos that have blown my mind in the past...
![HTML5 download Attribute]()
HTML5 download Attribute
I tend to get caught up on the JavaScript side of the HTML5 revolution, and can you blame me? HTML5 gives us awesome "big" stuff like WebSockets, Web Workers, History, Storage and little helpers like the Element classList collection. There are, however, smaller features in...



