JavaScript Objects Introduction

JavaScript is an Object Oriented Programming (OOP) language.

An OOP language allows you to define your own objects and make your own variable types.

Object Oriented Programming

JavaScript is an Object Oriented Programming (OOP) language. An OOP language allows you to define your own objects and make your own variable types.

However, creating your own objects will be explained later, in the Advanced JavaScript section. We will start by looking at the built-in JavaScript objects, and how they are used. The next pages will explain each built-in JavaScript object in detail.

Note that an object is just a special kind of data. An object has properties and methods.

Properties

Properties are the values associated with an object.

In the following example we are using the length property of the String object to return the number of characters in a string:

<script type="text/javascript">

var txt="Hello World!";
document.write(txt.length);

</script>

The output of the code above will be:

12

Methods

Methods are the actions that can be performed on objects.

In the following example we are using the toUpperCase() method of the String object to display a text in uppercase letters:

<script type="text/javascript">

var str="Hello world!";
document.write(str.toUpperCase());

</script>

The output of the code above will be:

HELLO WORLD!

The Ektron Intranet lets you do everything you need to do on your corporate intranet and everything you want to do... all with just one application.

What can you do with the Ektron Intranet? Navigate through content, documents, assets, colleagues and workgroups quickly and intuitively with enterprise search Communicate with friends and colleagues with forums, message boards and corporate blogging using the new Social Networking Platform Promote collaboration among coworkers in your organization through project workspaces where others can efficiently find information and work together Personalize your company profile by bookmarking and organizing favorite content, uploading assets, posting photos, blogging, and more Interact with features like tagging, flagging, wikis and ratings found in the Web 2.0 Toolbox Author/edit content, manage navigation, menus, audit trails, workflow and approvals with the best in breed Content Management

See why there are 20,000+ Ektron integrations worldwide. Request an INSTANT DEMO or download a FREE TRIAL today.

Jump to: Top of Page or HOME or Printer friendly page

W3Schools provides material for training only. We do not warrant the correctness of its contents. The risk from using it lies entirely with the user. While using this site, you agree to have read and accepted our terms of use and privacy policy.

Copyright 1999-2008 by Refsnes Data. All Rights Reserved.

W3Schools was converted to XHTML in December 1999