This document provides a summary of an introductory presentation on advanced JavaScript concepts including closures, prototypes, inheritance, and more. The presentation covers object literals and arrays, functions as objects, constructors and the this keyword, prototypes and the prototype chain, classical and prototypal inheritance, scope, and closures. Examples are provided to demonstrate each concept.

1. Advanced JavaScript: closures, prototypes, inheritance Stoyan Stefanov Ajax Experience, Boston 2008

3. Before we start… Firebug console

4. Firebug console is a learning tool

6. Any page…

7. Fiddle…

8. Objects

13. Arrays

19. Functions

26. Constructors

36. var fn = new Function( 'a, b','return a+b'); var fn = function(a, b){ return a + b; } var re = new RegExp( '[a-z]', 'gmi'); var re = /[a-z]/gmi; var a = new Array(); var a = []; var o = new Object(); var o = {}; Not that Use this

39. Prototype

50. The prototype chain

52. Inheritance

74. Scope

79. Closures

80. Photo credit: NASA