spacer
Yehuda Shiran May 1, 2002
JScript .NET's var Requirement
Tips: May 2002

Yehuda Shiran, Ph.D.
Doc JavaScript

Developer News
Microsoft Shows Off Silverlight 4, IE9 Plans
Metasploit Expands Vulnerability Test Framework
HyperCard Reborn?

 JavaScript does not enforce any data-typing. It has a very forgiving type system. You can assign a number to a variable in one line and assign a string to the same variable on the next line. JScript .NET is identical to JavaScript in this respect: variables can be un-typed. JScript .NET is different from JavaScript in that it requires the declaration of variables (with var), while JavaScript does not. This is valid JavaScript code:

  a = 4;
  a = "four";
That code will not compile in JScript .NET because of the missing var declaration:

  var a;
  a = 4;
  a = "four";
To learn more on JScript .NET, go to Column 108, JScript .NET, Part II: Major Features.

People who read this tip also read these tips:

Look for similar tips by subject:

internet.commediabistro.comJusttechjobs.comGraphics.com

Search:

WebMediaBrands Corporate Info

Legal Notices, Licensing, Permissions, Privacy Policy.
Advertise | Newsletters | Shopping | E-mail Offers | Freelance Jobs

Solutions

Whitepapers and eBooks

Microsoft Articles: Visual Studio 2010
Adobe Article: Adobe Helps PHP Developers Create Rich Internet Applications
Microsoft Whitepaper: How Windows Server 2008 R2 Helps Optimize IT and Save You Money
Adobe Article: Java Developers Finding a Home at Adobe Flex
IBM Articles: A Smarter Business Needs Smarter Technology
Intel Xeon Processor Increases Server Efficiency and Capabilities
Intel Tech Brief: Automated Energy Efficiency for the Intelligent Enterprise
Oracle Whitepapers - Innovation for IT Leaders
Avaya Article: Communication-Enabled Mashups--Empowering Both Business Owners and IT
 Internet.com eBook: IT Manager's Guide to Social Networking
Internet.com eBook: Get Ready for Windows 7
Microsoft Article: Expression Web 3--New Features for PHP Developers
Whitepapers: Manage Your Business Infrastracture with IBM
Whitepaper: Maximize Your Storage Investment with HP
Internet.com eBook: Becoming a Better Project Manager
Microsoft Article: Stress Free and Efficient Designer/Developer Collaboration
MORE WHITEPAPERS, EBOOKS, AND ARTICLES

Webcasts

Webcast: Connecting PHP to Microsoft Technologies
Video: Microsoft Partner Program Benefits
Video: Windows Azure Debugging Tips
SAP BusinessObjects Webcast: Unlock the Power of Reporting with Crystal Reports
 IBM Webcast: Speed Business Innovation with Reduced Cost and Risk
Video: Deploy Applications on Windows Azure
MORE WEBCASTS, PODCASTS, AND VIDEOS

Downloads and eKits

Download: Microsoft Visual Studio 2010 Beta 2
Downloads & Free Trials: Microsoft's New Efficiency Resource Center
Get the Windows 7 SDK
 Free Trial: Red Gate SQL Backup Pro 6
Iron Speed Designer Application Generator
MORE DOWNLOADS, EKITS, AND FREE TRIALS

Tutorials and Demos

Internet.com Hot List: Get the Inside Scoop on the Hottest IT and Developer Products
All About Botnets
 MORE TUTORIALS, DEMOS AND STEP-BY-STEP GUIDES
webref The latest from WebReference.com Browse >
Rolling Out Your Own HTML Application Version Control · HTML 5: Client-side Storage · Working with Ajax Server Extensions
Sitemap · Experts · Tools · Services · Email a Colleague · Contact FREE Newsletters > 
 The latest from internet.com
Wi-Fi Product Watch, November 2009 · Chip Market Recovering From '08 Collapse · Low-Cost Tools to Kickstart Your New Business