This book is a "meditation" on the features that make JavaScript stand apart from other languages and make it special in terms of having admirable qualities. Author Mike James has written a series of twenty "Jems" each showing the language in a new light, each intended to be an enjoyable read for any JavaScript programmer about features that have their advantages and disadvantages over their counterparts in other languages. The book has been written for everyone who encounters JavaScript – not just its aficionados but also its detractors. It looks at how JavaScript does things differently from the perspective of how its differences can be exploited and put to good use.

Author: Mike James
Publisher: I/O Press
Date: May 2020
Pages: 218
ISBN: 978-1871962420
Print: 1871962420
Kindle: B0896SDK1Y
Audience: JavaScript developers
Level: Intermediate/Advanced
Category: JavaScript

• Jem 0 Why JavaScript Is A Jem
• Jem 1 JavaScript Is Classless
• Jem 2 The Inheritance Tax
• Jem 3 Functions Are Objects
• Jem 4 Objects, Functions And this
• Jem 5 Every Object Is An Anonymous Singleton
• Jem 6 Objects Have Value
• Jem 7 Numbers And Other Values
• Jem 8 Truthy And Falsey
• Jem 9 The Comma
• Jem 10 Code As Data
• Jem 11 Lambda Expressions
• Jem 12 Fluent Interfaces
• Jem 13 Hoisting, Scope And Lifetime
• Jem 14 Amazing Async
• Jem 15 The Revealing Constructor Pattern
• Jem 16 Functional And Not Quite Functional
• Jem 17 Immutability
• Jem 18 Functional Approach To Iteration
• Jem 19 Metaprogramming - The Proxy

For recommendations of JavaScript books see JavaScript Beginners Book Choice and Advanced JavaScript Book Choices in our Programmer's Bookshelf section.

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