vault/headjs: The only script in your HEAD

Speed up your apps: Load JS & CSS asyncronously and in parallel, but execute them in order
Load one asset if a condition is met, else fallback and load a different one
Manage script dependencies, and execute callbacks once they are loaded
Cross-browser compatible « pseudo media-queries » let you code against different resolutions & devices
Fix quirks in specific browsers by quickly applying dedicated CSS/JS logic
Detect various browsers & their versions
Check if the client supports a certain Browser, HTML5, or CSS3 feature
Automatically generates JS and CSS classes for browsers & features that where detected
Automatically generates CSS classes, to know what page or section a user is viewing
Know if the user is in landscape or portrait mode
Or whether the client is using a mobile or desktop device
Get old browsers to support HTML5 elements like nav, sidebar, header, footer, …
…
Make it, The only script in your <HEAD>
- A concise solution to universal problems

###Resources

WebSite
- https://headjs.github.io/
Bugs
- https://github.com/headjs/headjs/issues
Community Support
- http://stackoverflow.com
- Remember to tag your questions with: head.js