JavaScript Guide

JavaScript Guide

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Table of contents

1. Quick Table of Contents
2. Expanded Table of Contents
   1. About this Guide
   2. JavaScript Overview
   3. Values, variables, and literals
   4. Expressions and operators
   5. Regular Expressions
   6. Statements
   7. Functions
   8. Working with objects
   9. Predefined Core Objects
   10. Details of the object model
   11. Inheritance revisited
   12. Iterators and generators
   13. Closures
   14. LiveConnect Overview
   15. Processing XML with E4X

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Quick Table of Contents

1. About this Guide
2. JavaScript Overview
3. Values, variables, and literals
4. Expressions and operators
5. Regular Expressions
6. Statements
7. Functions
8. Working with objects
9. Predefined Core Objects
10. Details of the object model
11. Inheritance revisited
12. Iterators and generators
13. Closures
14. LiveConnect Overview
15. Processing XML with E4X

 

Expanded Table of Contents

 

About this Guide

1. 1. New features in JavaScript versions
2. 2. What you should already know
3. 3. JavaScript versions
4. 4. Where to find JavaScript information
5. 5. Tips for learning JavaScript
   1. 5.1. An interactive interpreter
   2. 5.2. Firebug
6. 6. Document conventions

 

JavaScript Overview

1. 1. What is JavaScript?
2. 2. JavaScript and Java
3. 3. JavaScript and the ECMAScript Specification
   1. 3.1. Relationship between JavaScript Versions and ECMAScript Editions
   2. 3.2. JavaScript Documentation versus the ECMAScript Specification
   3. 3.3. JavaScript and ECMAScript Terminology

 

Values, variables, and literals

1. 1. Values
   1. 1.1. Data type conversion
   2. 1.2. Converting strings to numbers
      1. 1.2.1. parseInt() and parseFloat()
      2. 1.2.2. Plus operator
2. 2. Variables
   1. 2.1. Declaring variables
   2. 2.2. Evaluating variables
   3. 2.3. Variable scope
   4. 2.4. Global variables
   5. 2.5. See also
3. 3. Constants
4. 4. Literals
   1. 4.1. Array literals
      1. 4.1.1. Extra commas in array literals
   2. 4.2. Boolean literals
   3. 4.3. Integers
   4. 4.4. Floating-point literals
   5. 4.5. Object literals
   6. 4.6. String literals
      1. 4.6.1. Using special characters in strings
      2. 4.6.2. Escaping characters
5. 5. Unicode
   1. 5.1. Unicode compatibility with ASCII and ISO
   2. 5.2. Unicode escape sequences
   3. 5.3. Unicode characters in JavaScript files
   4. 5.4. Displaying characters with Unicode

 

Expressions and operators

1. 1. Expressions
2. 2. Operators
   1. 2.1. Assignment operators
   2. 2.2. Comparison operators
   3. 2.3. Arithmetic operators
   4. 2.4. Bitwise operators
      1. 2.4.1. Bitwise logical operators
      2. 2.4.2. Bitwise shift operators
   5. 2.5. Logical operators
      1. 2.5.1. Short-circuit evaluation
   6. 2.6. String operators
   7. 2.7. Special operators
      1. 2.7.1. Conditional operator
      2. 2.7.2. Comma operator
      3. 2.7.3. delete
      4. 2.7.4. in
      5. 2.7.5. instanceof
      6. 2.7.6. new
      7. 2.7.7. this
      8. 2.7.8. typeof
      9. 2.7.9. void
   8. 2.8. Operator precedence

 

Regular Expressions

1. 1. Creating a Regular Expression
2. 2. Writing a Regular Expression Pattern
   1. 2.1. Using Simple Patterns
   2. 2.2. Using Special Characters
   3. 2.3. Using Parentheses
3. 3. Working with Regular Expressions
   1. 3.1. Using Parenthesized Substring Matches
      1. 3.1.1. Example 1
   2. 3.2. Advanced Searching With Flags
4. 4. Examples
   1. 4.1. Changing the Order in an Input String
   2. 4.2. Using Special Characters to Verify Input

 

Statements

1. 1. Block Statement
2. 2. Conditional Statements
   1. 2.1. if...else Statement
   2. 2.2. switch Statement
3. 3. Loop Statements
   1. 3.1. for Statement
   2. 3.2. do...while Statement
   3. 3.3. while Statement
   4. 3.4. label Statement
   5. 3.5. break Statement
   6. 3.6. continue Statement
4. 4. Object Manipulation Statements
   1. 4.1. for...in Statement
   2. 4.2. for each...in Statement
5. 5. Comments
6. 6. Exception Handling Statements
   1. 6.1. Exception Types
   2. 6.2. throw Statement
   3. 6.3. try...catch Statement
      1. 6.3.1. The catch Block
      2. 6.3.2. The finally Block
      3. 6.3.3. Nesting try...catch Statements
   4. 6.4. Utilizing Error objects

 

Functions

1. 1. Defining functions
2. 2. Calling functions
3. 3. Function scope
4. 4. Closures
5. 5. Using the arguments object
6. 6. Predefined functions
   1. 6.1. eval Function
   2. 6.2. isFinite function
   3. 6.3. isNaN function
   4. 6.4. parseInt and parseFloat functions
   5. 6.5. Number and String functions
   6. 6.6. escape and unescape functions

 

Working with objects

1. 1. Objects overview
2. 2. Objects and properties
3. 3. Object everything
4. 4. Enumerating all properties of an object
5. 5. Creating new objects
   1. 5.1. Using object initializers
   2. 5.2. Using a constructor function
   3. 5.3. Using the Object.create method
   4. 5.4. Inheritance
   5. 5.5. Indexing object properties
   6. 5.6. Defining properties for an object type
   7. 5.7. Defining methods
   8. 5.8. Using this for object references
   9. 5.9. Defining getters and setters
      1. 5.9.1. Obsolete syntaxes
      2. 5.9.2. Summary
      3. 5.9.3. See also
   10. 5.10. Deleting properties
6. 6. See also

JavaScript Guide

• Edit
• Watch

Table of contents

1. 1. Quick Table of Contents
2. 2. Expanded Table of Contents
   
   1. 2.1. About this Guide
   2. 2.2. JavaScript Overview
   3. 2.3. Values, variables, and literals
   4. 2.4. Expressions and operators
   5. 2.5. Regular Expressions
   6. 2.6. Statements
   7. 2.7. Functions
   8. 2.8. Working with objects
   9. 2.9. Predefined Core Objects
   10. 2.10. Details of the object model
   11. 2.11. Inheritance revisited
   12. 2.12. Iterators and generators
   13. 2.13. Closures
   14. 2.14. LiveConnect Overview
   15. 2.15. Processing XML with E4X

• Tags
• Files

Page Notifications
Off

Table of contents

1. 1. Quick Table of Contents
2. 2. Expanded Table of Contents
   
   1. 2.1. About this Guide
   2. 2.2. JavaScript Overview
   3. 2.3. Values, variables, and literals
   4. 2.4. Expressions and operators
   5. 2.5. Regular Expressions
   6. 2.6. Statements
   7. 2.7. Functions
   8. 2.8. Working with objects
   9. 2.9. Predefined Core Objects
   10. 2.10. Details of the object model
   11. 2.11. Inheritance revisited
   12. 2.12. Iterators and generators
   13. 2.13. Closures
   14. 2.14. LiveConnect Overview
   15. 2.15. Processing XML with E4X

 

Quick Table of Contents

1. About this Guide
2. JavaScript Overview
3. Values, variables, and literals
4. Expressions and operators
5. Regular Expressions
6. Statements
7. Functions
8. Working with objects
9. Predefined Core Objects
10. Details of the object model
11. Inheritance revisited
12. Iterators and generators
13. Closures
14. LiveConnect Overview
15. Processing XML with E4X

 

Expanded Table of Contents

 

About this Guide

1. 1. New features in JavaScript versions
2. 2. What you should already know
3. 3. JavaScript versions
4. 4. Where to find JavaScript information
5. 5. Tips for learning JavaScript
   
   1. 5.1. An interactive interpreter
   2. 5.2. Firebug
6. 6. Document conventions

 

JavaScript Overview

1. 1. What is JavaScript?
2. 2. JavaScript and Java
3. 3. JavaScript and the ECMAScript Specification
   
   1. 3.1. Relationship between JavaScript Versions and ECMAScript Editions
   2. 3.2. JavaScript Documentation versus the ECMAScript Specification
   3. 3.3. JavaScript and ECMAScript Terminology

 

Values, variables, and literals

1. 1. Values
   
   1. 1.1. Data type conversion
   2. 1.2. Converting strings to numbers
      
      1. 1.2.1. parseInt() and parseFloat()
      2. 1.2.2. Plus operator
2. 2. Variables
   
   1. 2.1. Declaring variables
   2. 2.2. Evaluating variables
   3. 2.3. Variable scope
   4. 2.4. Global variables
   5. 2.5. See also
3. 3. Constants
4. 4. Literals
   
   1. 4.1. Array literals
      
      1. 4.1.1. Extra commas in array literals
   2. 4.2. Boolean literals
   3. 4.3. Integers
   4. 4.4. Floating-point literals
   5. 4.5. Object literals
   6. 4.6. String literals
      
      1. 4.6.1. Using special characters in strings
      2. 4.6.2. Escaping characters
5. 5. Unicode
   
   1. 5.1. Unicode compatibility with ASCII and ISO
   2. 5.2. Unicode escape sequences
   3. 5.3. Unicode characters in JavaScript files
   4. 5.4. Displaying characters with Unicode

 

Expressions and operators

1. 1. Expressions
2. 2. Operators
   
   1. 2.1. Assignment operators
   2. 2.2. Comparison operators
   3. 2.3. Arithmetic operators
   4. 2.4. Bitwise operators
      
      1. 2.4.1. Bitwise logical operators
      2. 2.4.2. Bitwise shift operators
   5. 2.5. Logical operators
      
      1. 2.5.1. Short-circuit evaluation
   6. 2.6. String operators
   7. 2.7. Special operators
      
      1. 2.7.1. Conditional operator
      2. 2.7.2. Comma operator
      3. 2.7.3. delete
      4. 2.7.4. in
      5. 2.7.5. instanceof
      6. 2.7.6. new
      7. 2.7.7. this
      8. 2.7.8. typeof
      9. 2.7.9. void
   8. 2.8. Operator precedence

 

Regular Expressions

1. 1. Creating a Regular Expression
2. 2. Writing a Regular Expression Pattern
   
   1. 2.1. Using Simple Patterns
   2. 2.2. Using Special Characters
   3. 2.3. Using Parentheses
3. 3. Working with Regular Expressions
   
   1. 3.1. Using Parenthesized Substring Matches
      
      1. 3.1.1. Example 1
   2. 3.2. Advanced Searching With Flags
4. 4. Examples
   
   1. 4.1. Changing the Order in an Input String
   2. 4.2. Using Special Characters to Verify Input

 

Statements

1. 1. Block Statement
2. 2. Conditional Statements
   
   1. 2.1. if...else Statement
   2. 2.2. switch Statement
3. 3. Loop Statements
   
   1. 3.1. for Statement
   2. 3.2. do...while Statement
   3. 3.3. while Statement
   4. 3.4. label Statement
   5. 3.5. break Statement
   6. 3.6. continue Statement
4. 4. Object Manipulation Statements
   
   1. 4.1. for...in Statement
   2. 4.2. for each...in Statement
5. 5. Comments
6. 6. Exception Handling Statements
   
   1. 6.1. Exception Types
   2. 6.2. throw Statement
   3. 6.3. try...catch Statement
      
      1. 6.3.1. The catch Block
      2. 6.3.2. The finally Block
      3. 6.3.3. Nesting try...catch Statements
   4. 6.4. Utilizing Error objects

 

Functions

1. 1. Defining functions
2. 2. Calling functions
3. 3. Function scope
4. 4. Closures
5. 5. Using the arguments object
6. 6. Predefined functions
   
   1. 6.1. eval Function
   2. 6.2. isFinite function
   3. 6.3. isNaN function
   4. 6.4. parseInt and parseFloat functions
   5. 6.5. Number and String functions
   6. 6.6. escape and unescape functions

 

Working with objects

1. 1. Objects overview
2. 2. Objects and properties
3. 3. Object everything
4. 4. Enumerating all properties of an object
5. 5. Creating new objects
   
   1. 5.1. Using object initializers
   2. 5.2. Using a constructor function
   3. 5.3. Using the Object.create method
   4. 5.4. Inheritance
   5. 5.5. Indexing object properties
   6. 5.6. Defining properties for an object type
   7. 5.7. Defining methods
   8. 5.8. Using this for object references
   9. 5.9. Defining getters and setters
      
      1. 5.9.1. Obsolete syntaxes
      2. 5.9.2. Summary
      3. 5.9.3. See also
   10. 5.10. Deleting properties
6. 6. See also