JavaScript Essentials

A comprehensive online book designed to provide web developers with everything they need to know to create rich, interactive and dynamic web pages using JavaScript.

• About this Book
• Intended Audience

1. The History of JavaScript
   • Jim and Marc Meet in Palo Alto
   • Moving on from Static Web Pages
   • LiveScript, JavaScript, JScript, ECMAScript - What's in a Name?
2. A Simple JavaScript Example
3. Embedding JavaScript into Web pages
   • The <script> element
   • Where to place JavaScript in a Web Page
4. Introducing JavaScript Variables
   • Variable Declaration and the Assignment Operator
   • JavaScript Variable Naming Conventions
5. JavaScript Variable Types
   • The JavaScript typeof Operator
6. JavaScript Operators
   • Assignment Operators
   • Arithmetic Operators
   • Unary Operators - Incrementing and Decrementing Variable Values
   • Comparison Operators
   • String Operators
   • Conditional Operators
   • Logical Operators
7. Comments in JavaScript
   • Single Line Comments
   • Multi-line Comments
8. JavaScript Flow Control and Looping
   • JavaScript Conditional Statements
   • The JavaScript if Statement
   • The JavaScript if ... else Statements
   • JavaScript Looping Statements
   • JavaScript for loops
   • JavaScript while loops
   • JavaScript do ... while loops
   • JavaScript switch Statements
   • Breaking a Loop
   • label Statements
   • Skipping Statements in Current Loop Iteration
9. Understanding JavaScript Functions
   • Declaring and Calling a JavaScript Function
   • Passing Arguments to a Function
   • Returning a Value from a Function
   • Where to Place Function Declarations
10. JavaScript Object Basics
    • Creating a Custom JavaScript Object
    • Creating and Using Object Instances
    • Extending JavaScript Objects
11. JavaScript String Object
    • Creating a JavaScript String Object
    • JavaScript String Object Methods
    • JavaScript String Object Properties
    • JavaScript String Object Examples
    • Getting the length of a String Object
    • Setting String Object text Effects
    • Performing Conversions on String Objects
    • Manipulating Strings with the String Object
12. JavaScript Date Object
    • Understanding System Time
    • Creating a JavaScript Date Object
    • Setting the Time and Date of the JavaScript Date Object
    • Reading the Date and Time from a JavaScript Date Object
    • UTC Time
    • Finding the Time Zone Offset and Getting Local Time
13. JavaScript Math Object
    • JavaScript Math Object Methods
    • JavaScript Math Object Properties
    • Using JavaScript Math Object and Properties
    • Rounding and Truncating Numbers with the the Math Object
14. JavaScript Window Object
    • Referencing the JavaScript window Object
    • JavaScript window Object Properties
    • Opening Browser Windows using JavaScript
    • Closing Browser Windows using JavaScript
    • Moving and Resizing Windows
    • Changing Window Focus
    • Displaying Message Box Dialogs
15. JavaScript Document Object
    • What is the JavaScript Document Object?
    • JavaScript Document Object Methods and Properties
    • Using the JavaScript Document Object
    • Writing text to a document
    • Writing Text to a document in a different Window
    • Changing the Document Title
    • Changing the Document Colors
    • Getting a List of Objects in a Document
16. JavaScript Location Object
    • Loading a New URL into the Current Window
    • Reading the URL of the Current Window
    • Extracting Parts of the URL
    • JavaScript Location Object Methods
17. JavaScript History Object
18. JavaScript Arrays
    • What is a JavaScript Array
    • How to Create a JavaScript Array
    • Initializing the Elements of an Array
    • Accessing the Elements of a JavaScript Array
    • JavaScript Array Object Methods and Properties
    • JavaScript Array Sorting
19. JavaScript Timeouts
    • Setting up a JavaScript Timeout
    • Cancelling a JavaScript Timeout
    • Setting up JavaScript Timeout to Repeat
20. Building Forms with JavaScript
    • The JavaScript Form Object
    • Accessing Objects in a Form
    • The JavaScript Text Object
    • JavaScript TextArea Object
    • The JavaScript Button Object
    • JavaScript Check Boxes
    • JavaScript Radio Buttons
    • JavaScript Drop-down / Select Object
    • Obtaining the Current Selection from the JavaScript Select Object
    • JavaScript Password Object
21. Understanding JavaScript Cookies
    • What is a JavaScript Cookie?
    • The Structure of a Cookie
    • Cookie Name / Value Pair
    • Cookie Expiration Setting
    • Cookie path Setting
    • Cookie domain Setting
    • Creating a Cookie
    • Reading a Cookie
    • Removing a Cookie
22. Understanding Cascading Style Sheets (CSS)
    • What are Cascading Style Sheets for?
    • Embedding CSS Styles into a Web Page
    • Importing an External Style Sheet into a Web Page
    • Creating CSS Rules
    • Setting Styles for Individual Elements
    • Setting Styles using the id Attribute of an HTML Element
    • Using Classes with CSS Rules
23. JavaScript and CSS - Dynamic Styles and Layers
    • Making Basic Dynamic Style Changes
    • Hiding and Showing Content Using JavaScript
    • Using Overlaying Layers
    • Making Layers Move