Login 
Password
  
 


JavaScript Cert. Exam
Test your skills with our JavaScript certification exam and see how you stack up right now.

Homepage
Visit our homepage and find out more about what NCSA can do for you.

Introduction to JavaScript
Using JavaScript on your Webpage
A Simple JavaScript Application
Variables & Operators
Variables
Operators
Loops & Conditionals
Loops
Conditionals
Document Object Model
Nodes
Functions & Methods
Built-in Functions
User Defined Functions
Forms & Events
Forms
Events
Browsers
Cookies
Image Maps
Timing Events

Learn More About Us
Find out more about how our certifications can benefit you.

Course Descriptions
View a complete listing of certifications available through NCSA.

Employer Programs
Visit our employer programs page and discover the options available to connect you with our customers.

Certificate Database
Lookup a certification in our online database.

Affiliate Program
Make money by helping people get the computer training and certification they need. Sign-up Here!

Support Center
If you have questions or concerns feel free to visit our online support center.


 

Timing Events


JavaScript allows you to execute some code after specific amount of time. The timing events allow you to do that. Using timing events you can execute loops again and again after some time interval or perform a number of other such tasks. These events also add security to your code by logging out the users if they did not interact with the server for a specific duration. This is mainly use in secure websites such as banking web sites where crucial money transactions take place. The timing events are setTimeout(), clearTimeout(), setInterval(), clearInterval()

 

Syntax

Functions

Syntax

setTimeout

var time =  set Timeout ("Expression", delay time);

setInterval

var time = setInterval ( function( ), delay time);

clearInterval

clearInterval(intervalID);

clearTimeout

clearTimeout ( timeoutId );

 

Example

<script type = "text/javascript">
<!--
setTimeout

 

var timeoutID = setTimeout(" alert ('Time out, Fifty seconds over'); ", 50000);

var intervalID = setInterval(" alert ('Time out, Fifty seconds over'); ", 50000);

clearTimeout(timeoutID);

clearInterval(intervalID);

 
//-->
</script>

 


NCSA OnDemand Training Courses



Web-based Training Courses, including 7,500+ Videos & Articles, covering:

Microsoft Office
2003 | 2007
Microsoft Windows
Vista
Visio
2003 / 2007
OneNote
2003 / 2007
Project
2003 | 2007
Sharepoint
3.0
Access
2003 | 2007
Excel
2003 | 2007
Outlook
2003 | 2007
PowerPoint
2003 | 2007
Word
2003 | 2007
Office for Mac
2008
Excel for Mac
2008
Entourage for Mac
2008
PowerPoint for Mac
2008
Word for Mac
2008

Acrobat 8 Professional ADO.NET 2.0 ASP.NET 2.0 for Visual Basic 2005
C# 2005 Crystal Reports XI Exchange Server 2003
Flash 8 ActionScripting Flash 8 for Designer FrontPage 2003
Mind Manager 7 Pro + Project 2007 Mind Manager 7 Pro Fundamentals Office 2007 - What's New
Photoshop CS2 PHP Programming QuickBooks Pro 2006
SharePoint End User: Administrator SharePoint End User: Contributor SharePoint End User: Reader
Small Business Server 2003 SQL Server 2005 Visual Basic 2005
Windows Server 2003

Order NCSA OnDemand today and get access to over 7500 quality instuctor led videos and training courses covering today's most popular software programs and programming languages.

OnDemand Monthly - $25/month
No long term commitment.
Annual Member - $159/year
Save 50%off monthly price.
Premium - $249/year
Includes NCSA certifications


    

  
HOME    PRIVACY    EMPLOYERS    CERTIFICATION LIST    AFFILIATES    CONTACT US

© 2002-2010 National Computer Science Academy, All Rights Reserved.