JavaScript

JavaScript Contents

JavaScript Number <=> String Conversion

JavaScript Nothingness

JavaScript Math Object Functions

JavaScript Math Object

JavaScript Functions

JavaScript Form

JavaScript Error (try/catch/finally)

JavaScript Date Object Functions

JavaScript Date Object

JavaScript Loops

JavaScript Operators

JavaScript Conditional Statements

JavaScript Boolean Object

JavaScript Assertiveness

JavaScript Array Object Functions

JavaScript Arrays

JavaScript Variables

How to use JavaScript?

JavaScript Guidelines

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By :	Mark Wilson I am the creator of TopXML. I am available for international and local (Australia) contracts. I am a Solution Architect/Business Analyst. I have worked in IT in several countries (NZ, Australia, South Africa, UK) building and training teams for government and very large non-governmental organizations. I am ex-Microsoft Consulting Services. I wrote the first book on Microsoft XML published in 2000 called XML Programming with VB and ASP. Most recently I have been building tools for the SEO industry. Ask me for a 37 point SEO health-checkup for your website.
First posted :	03/24/2008
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JavaScript Object Orientation

Introduction

Object orientation can be a big advantage once you understand it. It allows you to reuse your code. You won’t need to write it again and again. You can inherit you existing code to provide some basic functions and extend it with the new features.

Example

The following example creates three functions - Building, BuildingValue and Motel. The Motel function is derived from the Building function and therefore it contains all the features from that. After that I just create a new object of the function Motel and call the properties constructionYear and BuildingValue, which are both derived from the Building function.

<html>

<head>

function Building()

{

this.value = "300.000 USD$"

this.constructionYear = "2004"

}

function BuildingValue()

{

return "300.000 USD$"

}

function Motel()