Update your skill set with the ultimate JavaScript guide for pros. 

Professional JavaScript for Web Developers   is the essential guide to next-level JavaScript development. At 1,200 pages, this book is the most comprehensive JavaScript reference available anywhere. Written for intermediate-to-advanced programmers, this book jumps right into the technical details to help you clean up your code and become a more sophisticated JavaScript developer. 
This new fourth edition has been updated to cover through ECMAScript 2019; new frameworks and libraries, new techniques, new APIs, and more are explained in detail for the professional developer, with a practical focus that helps you put your new skills to work on real-world projects.

The latest--and most dramatic--ES release is already being incorporated into JavaScript engines in major browsers; this, coupled with the rise in mobile web traffic increasing demand for responsive, dynamic web design, means that all web developers need to update their skills--and this book is your ideal resource for quick, relevant guidance.

[*]         Get up to date on ECMAScript through ES2019, including classes, promises, async/await, proxies, iterators, generators, symbols, modules, and spread/rest operators.
[*]         Delve into fundamental web development concepts such as the document object model (DOM), browser object model (BOM), events, forms, JSON, error handling, and web animation.
[*]         Learn about advanced browser APIs such as geolocation, web workers, service workers, fetch, atomics, streams, message channels, performance timelines, and web cryptography.
[*]         Work hands-on with hundreds of working code examples that demonstrate concepts clearly and concisely.     

Even if you think you know JavaScript, new ES releases bring big changes that will affect the way you work. For a professional-level update that doesn't waste time on coding fundamentals,   Professional JavaScript for Web Developers   is the ultimate resource to bring you up to speed.

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