The 33 concepts every JavaScript developer should know are still at the top of our weekly rankings. The number of articles gathered by the 40 contributors of the project has doubled since last week.

At position number two, Howler is a library to handle audio in the browser. It can read a large variety of audio formats (mp3, webm…) in all kinds of browsers.

The examples featured in the web site include a music player and a live radio built from a few lines of code.