About the Book

What readers have to say:

“Spent the afternoon reading @raganwald's JavaScript Allongé, the Six Edition. Highly recommended. Let the refactoring begin!”—Marcus Vorwaller

“I think it’s one of the best tech books I’ve read since Sedgewick’s Algorithms in C.”—Andrey Sidorov

“Your explanation of closures in JavaScript Allongé is the best I've read.”—Emehrkay

“It's a different approach to JavaScript than you'll find in most other places and shines a light on some of the more elegant parts of JavaScript the language.”—@jeremymorrell
“This book is awesome and blowing my mind in a great way.”—Johnathan Mukai

“Enjoying Javascript Allonge... I think it's the best discussion of functional programming in js I've found so far.”—Nicholas Faiz

“Reading JavaScript Allongé by @raganwald. This book is so good that it's blowing my mind.”—Guillermo Pascual
And listen to the JavaScript Jabber Book Club Podcast about JavaScript Allongé!

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A Pull of the Lever: Prefaces
- About JavaScript Allongé
- What JavaScript Allongé is. And isn’t.
- Forwards to the First Edition
- A Personal Word About The Recipes
- Legend
Prelude: Values and Expressions over Coffee
- values are expressions
- values and identity
A Rich Aroma: Basic Numbers
The first sip: Basic Functions
- As Little As Possible About Functions, But No Less
- Ah. I’d Like to Have an Argument, Please.
- Closures and Scope
- That Constant Coffee Craving
- Naming Functions
- Combinators and Function Decorators
- Building Blocks
- Magic Names
- Summary
Recipes with Basic Functions
- Partial Application
- Unary
- Tap
- Maybe
- Once
Picking the Bean: Choice and Truthiness
Composing and Decomposing Data
- Arrays and Destructuring Arguments
- Self-Similarity
- Tail Calls (and Default Arguments)
- Garbage, Garbage Everywhere
- Plain Old JavaScript Objects
- Mutation
- Reassignment
- Copy on Write
- Tortoises, Hares, and Teleporting Turtles
- Functional Iterators
- Making Data Out Of Functions
Recipes with Data
- mapWith
- Flip
- Why?
A Warm Cup: Basic Strings and Quasi-Literals
Stir the Allongé: Objects and State
- Encapsulating State with Closures
- Composition and Extension
- This and That
- What Context Applies When We Call a Function?
- Method Decorators
- Summary
Recipes with Objects, Mutations, and State
- Memoize
- getWith
- pluckWith
- Deep Mapping
The Coffee Factory: “Object-Oriented Programming”
Served by the Pot: Collections
- Iteration and Iterables
- Generating Iterables
- Lazy and Eager Collections
- Interlude: The Carpenter Interviews for a Job
- More Iterable Mapping Operations
- Interactive Generators
- Basic Operations on Iterables
A Coffeehouse: Symbols
Life on the Plantation: Metaobjects
- Why Metaobjects?
- Mixins, Forwarding, and Delegation
- Later Binding
- Delegation via Prototypes
- Shared Prototypes
Decaffeinated: Impostors
Finish the Cup: Constructors and Classes
- Constructors and new
- Why Classes in JavaScript?
- Classes with class
- Object Methods
- Why Not Classes?
- Summary
Recipes with Constructors and Classes
- Bound
- Send
- Invoke
- Fluent
Colourful Mugs: Symmetry, Colour, and Charm
Biscotti on the Side: Method Decorators
Con Panna: Composing Class Behaviour
- Extending Classes with Mixins
- Functional Mixins
- Preventing Property Conflicts
- Reducing Coupling
- Resolving Conflicts with Policies
Closing Time at the Coffeeshop: Final Remarks
The Golden Crema: Appendices and Afterwords
- How to run the examples
- Thanks!
- JavaScript Spessore
- Reading JavaScript Allongé on Kindle
- Copyright Notice
- About The Author

About the Author

Reg “raganwald” Braithwaite

When he's not shipping CoffeeScript, JavaScript, Ruby, and Java applications scaling out to millions of users, Reg "Raganwald" Braithwaite creates programming libraries such as Allong.es, Method Combinators, Katy, JQuery Combinators, YouAreDaChef, andand, and others.

He writes primarily about programming. Find out more on his home page.