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?
![fetch API]()
fetch API
One of the worst kept secrets about AJAX on the web is that the underlying API for it,
XMLHttpRequest, wasn't really made for what we've been using it for. We've done well to create elegant APIs around XHR but we know we can do better. Our effort to...
Incredible Demos
![Create Keyboard Shortcuts with Mousetrap]()
Create Keyboard Shortcuts with Mousetrap
Some of the finest parts of web apps are hidden in the little things. These "small details" can often add up to big, big gains. One of those small gains can be found in keyboard shortcuts. Awesome web apps like Gmail and GitHub use loads of...
![Vertically Centering with Flexbox]()
Vertically Centering with Flexbox
Vertically centering sibling child contents is a task we've long needed on the web but has always seemed way more difficult than it should be. We initially used tables to accomplish the task, then moved on to CSS and JavaScript tricks because table layout was horribly...



