Why reinvent the wheel every time you run into a problem with JavaScript? This cookbook is chock-full of code recipes that address common programming tasks, as well as techniques for building web apps that work in any browser. Just copy and paste the code samples into your project―you’ll get the job done faster and learn more about JavaScript in the process. You'll also learn how to take advantage of the latest features in ECMAScript 5 and HTML5, including the new cross-domain widget communication technique, HTML5's video and audio elements, and the drawing canvas. You'll find recipes for using these features with JavaScript to build high-quality application interfaces.
A cookbook is useful... but there are many better books on javascript from O'Reilly. My favourite is Javascript Patterns. Javascript the definitive guide 6th ed is also a must have.
it is a good book , it makes know alot more about the ECMASript5 and it cover the contact points between the language and its environment(SVG , HTML , JQUERY ... ) .but this book is little bit outdated