perf_alert
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?
![Create Spinning Rays with CSS3: Revisited]()
Create Spinning Rays with CSS3: Revisited
Last December I wrote a blog post titled Create Spinning Rays with CSS3 Animations & JavaScript where I explained how easy it was to create a spinning rays animation with a bit of CSS and JavaScript. The post became quite popular so I...
Incredible Demos
![CSS Background Animations]()
CSS Background Animations
Background animations are an awesome touch when used correctly. In the past, I used MooTools to animate a background position. Luckily these days CSS animations are widely supported enough to rely on them to take over JavaScript-based animation tasks. The following simple CSS snippet animates...
![External Site Link Favorite Icons Using MooTools and CSS]()
External Site Link Favorite Icons Using MooTools and CSS
I recently came upon an interesting jQuery article about how you can retrieve all external links within a page, build the address of the site's favorite icon, and place the favorite icon along side the link. I've chosen a different approach which...
