Learning JavaScript

دوره آموزش Javascript

Introduction 1
Chapter 1: Progressive Enhancement 3
Defining Progressive Enhancement 3
History 4
Purpose 5
Accessibility 5
Reusability 5
Progressive Enhancement Versus Graceful
Degradation 6
Structure Layer 6
Adding More Meaning with HTML5 8
Presentation Layer 9
Inline CSS 10
Linking Up Your Stylesheet 10
Behavior Layer 12
Inline JavaScript 12
Embedded JavaScript 13
External and Unobtrusive JavaScript 15
Benefits of Progressive Enhancement 16
Performance 17
Building for the Future 17
The Touch Interface 18
Final Words on Progressive Enhancement 19
Summary 20
Exercises 20
Chapter 2: JavaScript in the Browser 21
A People’s History of JavaScript 21
Origins 22
Progressive Enhancement 23
The Behavior Layer 24
Moving Past Today 24
Browser Interactions with JavaScript 25
HTTP Requests 26
JavaScript and Rendering Engines 29

What JavaScript Can Do 30
Modifying HTML 31
Communicating with the Server 31
Storing Data 31
How You Should Use JavaScript 32
Improving User Experience 32
Using JavaScript Responsibly 32
Creating Fallbacks 34
Tools to Help You Use JavaScript 36
Tools Built into the Language 36
Tools Built into the Browser 37
Summary 38
Exercises 38
Chapter 3: JavaScript Terminology 39
Basics 39
Document Object Model (DOM) 39
Parents 40
Children 40
Siblings 41
Variables 41
Strings 43
Comments 43
Operators 44
Use Strict 45
Storage 45
Cache 45
Arrays 45
Cookies 46
JavaScript Object Notation (JSON) 46
Objects 47
Creating Interaction 47
Loops 48
Conditionals 48
switch Statement 49
Functions 50
Anonymous Functions 51