Mastering JavaScript by Antani, Ved -- Read -- Imperial Library of Trantor

Index

Mastering JavaScript

Table of Contents Mastering JavaScript Credits About the Author About the Reviewer www.PacktPub.com

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Preface

What this book covers What you need for this book Who this book is for Conventions Reader feedback Customer support

Downloading the example code Downloading the color images of this book Errata Piracy Questions

1. JavaScript Primer

A little bit of history How to use this book Hello World

An overview of JavaScript

Comments Variables Constants Number String Undefined values Booleans The instanceof operator Date objects The + operator The ++ and -- operators Boolean operators Equality

Strict equality using === Weak equality using ==

JavaScript types Automatic semicolon insertion JavaScript style guide

Whitespaces Parentheses, line breaks, and braces Quotes End of lines and empty lines Type checking Type casting Conditional evaluation Naming The eval() method is evil The strict mode

Enabling the strict mode for an existing code can break it Package with care Variables must be declared in strict mode

The eval() function is cleaner in strict mode

Features that are blocked in strict mode

Running JSHint

Summary

2. Functions, Closures, and Modules

A function literal

A function declaration

Functions as data Scoping

Global scope Local scope Function-level scope versus block-level scope Inline function expressions Block scopes

Function declarations versus function expressions The arguments parameter

The this parameter

Invocation as a function Invocation as a method Invocation as a constructor Invocation using apply() and call() methods

Anonymous functions

Anonymous functions while creating an object Anonymous functions while creating a list Anonymous functions as a parameter to another function Anonymous functions in conditional logic

Closures Timers and callbacks Private variables Loops and closures Modules

Stylistic considerations

Summary

3. Data Structures and Manipulation

Regular expressions Exact match Match from a class of characters Repeated occurrences

Alternatives – OR

Beginning and end Backreferences Greedy and lazy quantifiers Arrays Maps Sets A matter of style Summary

4. Object-Oriented JavaScript

Understanding objects

Behavior of JavaScript objects Prototypes

Instance properties versus prototype properties Inheritance Getters and setters Summary

5. JavaScript Patterns

Design patterns The namespace pattern The module pattern

ES6 modules

The factory pattern The mixin pattern The decorator pattern The observer pattern JavaScript Model-View-* patterns

Model-View-Controller Models Views Controllers

The Model-View-Presenter pattern Model-View-ViewModel Summary

6. Testing and Debugging

Unit testing

Test-driven development Behavior-driven development

JavaScript debugging

Syntax errors Using strict Runtime exceptions

Console.log and asserts Chrome DevTools

Summary

7. ECMAScript 6

Shims or polyfills Transpilers ES6 syntax changes

Block scoping Default parameters Spread and rest Destructuring Object literals Template literals Maps and Sets Symbols Iterators For..of loops Arrow functions

Summary

8. DOM Manipulation and Events

DOM

Accessing DOM elements Accessing specific nodes

Chaining Traversal and manipulation Working with browser events Propagation jQuery event handling and propagation Event delegation The event object Summary

9. Server-Side JavaScript

An asynchronous evented-model in a browser Callbacks Timers EventEmitters Modules

Creating modules

npm

Installing packages

JavaScript performance

JavaScript profiling

The CPU profile The Timeline view

Summary

Index

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