Harvey.js is a state manager for CSS media queries. Media queries are great for visual tweaks and simple behavioral switches, but they become difficult to rely on when behaviors change for larger or smaller devices. Harvey helps you monitor and manage those changes by firing an event whenever your media query is activated.
This method is preferable to relying on a screen resize event because you only receive an event when the query is matched - not for every screen resize. Less testing and more doing.
Demo: http:/ / harvesthq. github. com/ harvey/ #demo