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You Dont Know JS this and Object Prototypes 1st Edition by Kyle Simpson ISBN 1491904151 9781491904152

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You Don t Know JS this Object Prototypes 1st Edition Kyle Simpson Digital Instant Download

Author(s): Kyle Simpson
ISBN(s): 9781491904152, 1491904151
Edition: 1
File Details: PDF, 2.96 MB
Year: 2014
Language: english
SKU: EB-4726756 Category: Tag:

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ISBN 10: 1491904151 
ISBN 13: 9781491904152
Author: Kyle Simpson

No matter how much experience you have with JavaScript, odds are you don’t fully understand the language. This concise, in-depth guide takes you inside JavaScript’s this structure and object prototypes. You’ll learn how they work and why they’re integral to behavior delegation—a design pattern in which objects are linked, rather than cloned.Like other books in the “You Don’t Know JS” series, this and Object Prototypes dives into trickier parts of the language that many JavaScript programmers simply avoid. Armed with this knowledge, you can become a true JavaScript master.With this book you will:Explore how the this binding points to objects based on how the function is calledLook into the nature of JS objects and why you’d need to point to themLearn how developers use the mixin pattern to fake classes in JSExamine how JS’s prototype mechanism forms links between objectsLearn how to move from class/inheritance design to behavior delegationUnderstand how the OLOO (objects-linked-to-other-objects) coding style naturally implements behavior delegation

You Dont Know JS this and Object Prototypes 1st Table of contents:

Conventions Used in This Book
Using Code Examples
Safari® Books Online
How to Contact Us
Chapter 1. this or That?
Why this?
Confusions
Itself
Its Scope
What’s this?
Review
Chapter 2. this All Makes Sense Now!
Call-Site
Nothing but Rules
Default Binding
Implicit Binding
Explicit Binding
new Binding
Everything in Order
Determining this
Binding Exceptions
Ignored this
Indirection
Softening Binding
Lexical this
Review
Chapter 3. Objects
Syntax
Type
Built-in Objects
Contents
Computed Property Names
Property Versus Method
Arrays
Duplicating Objects
Property Descriptors
Immutability[[Get]][[Put]]Getters and Setters
Existence
Iteration
Review
Chapter 4. Mixing (Up) “Class” Objects
Class Theory
“Class” Design Pattern
JavaScript “Classes”
Class Mechanics
Building
Constructor
Class Inheritance
Polymorphism
Multiple Inheritance
Mixins
Explicit Mixins
Implicit Mixins
Review
Chapter 5. Prototypes[[Prototype]]Object.prototype
Setting and Shadowing Properties
“Class”
“Class” Functions
“Constructors”
Mechanics
(Prototypal) Inheritance
Inspecting “Class” Relationships
Object Links
Create()ing Links
Links as Fallbacks?
Review
Chapter 6. Behavior Delegation
Toward Delegation-Oriented Design
Class Theory
Delegation Theory
Mental Models Compared
Classes Versus Objects
Widget “Classes”
Delegating Widget Objects
Simpler Design
De-class-ified
Nicer Syntax
Unlexical
Introspection
Review
Appendix A. ES6 Class
class
class Gotchas
Static > Dynamic?

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Tags: Kyle Simpson, JS, Prototypes