Notes about "JavaScript: The Definition Guide" of David Flanagan

Chapter 1: Introduction to JavaScript
there are :

• the core JavaScript language = minimal API without I/O functions
• client-side JavaScript = hosting environment (browser)

Development environment : Firebug 
to debug : console.log() or alert()


Chapter 2: Lexical Structure

• Character Set
• support Unicode
• Case Sensitive
• ignores Whitespace
• Comments

 // This is a single-line comments.

 /* This is also a comment */  // and here is another comment.

 /*

  * This is yet another comment.

  * It has multiple lines

  */

• Literal

   12             // The number twelve

 1.2            // The number one point two

 "hello world"  // A string of text

 'Hi'           // Another string

 true           // A Boolean value

 false          // The other Boolean value

 /javascript/gi // A "regular expression" literal (for pattern  

 matching)

 null           // Absence of an object

{ x:1, y:2 }    // An object initializer

[ 1, 2, 3, 4 ]  // An array initializer