last update : 18 January 2012
Modernizr is a small JavaScript library that detects the availability of native implementations for next-generation web technologies. These technologies are new features that stem from the ongoing HTML 5 and CSS 3 specifications. Many of these features are already implemented in at least one major browser. Modernizr tell you whether the current browser has this feature natively implemented or not.

  1. Modernizr tests for over 40 next-generation features, all in a matter of milliseconds;
  2. Modernizr creates a JavaScript object (named Modernizr) that contains the results of these tests as boolean properties;
  3. Modernizr adds classes to the html element that explain precisely what features are and are not natively supported. It allow you to target specific browser functionality in your stylesheet ( if-statements in your CSS ). You don’t actually need to write any Javascript to use it.

I started with version 1.6.  and experienced a problem with Chrome 9 (beta) which was also reported by other people. The current version  2 was released on 1st June 2011.

With the help of the Modernizr library, the website gives a quick overview of a browser’s support for recent technologies in the world of HTML, CSS and Javascript.