Jon Simpson
A re-introduction to JavaScript
While often derided as a toy, beneath its deceptive simplicity lie some powerful language features. 2005 has seen the launch of a number of high-profile JavaScript applications, showing that deeper knowledge of this technology is an important skill for any web developer.
Dated, but a concise single page introduction to Javascript. At least it doesn’t pertain to the 1998-era, DHTML/IE4, clock following your mouse cursor variety.