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Microsoft Office JScript Documentation
isNaN Method
Microsoft Office JScript
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Microsoft® JScript®
isNaN Method
Applies To
Language Reference
Global Object
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Table of contents
JScript
JScript Language Reference
Feature Information
Alphabetic Keyword List
Errors
Functions
Methods
Objects
Operators
Properties
Statements
JScript Tutorial
What Is JScript?
JScript Basics
Writing JScript Code
JScript Variables
JScript Data Types
JScript Operators
Controlling Program Flow
JScript Functions
JScript Objects
JScript Reserved Keywords
Advanced JScript
Recursion
Variable Scope
Copying, Passing, and Comparing Data
Using Arrays
Advanced Object Creation
Special Characters
Troubleshooting Your Scripts
Using JScript In Internet Explorer
Displaying Information in the Browser
Using Message Boxes
Scripting Run-Time Reference
Feature Information
Alphabetic Keyword List
Methods
Objects
Properties
FileSystemObject Object Tutorial
The FileSystemObject Object Model
Introduction to the FileSystemObject and the Scripting Run-Time Library Reference
FileSystemObject Objects
Programming the FileSystemObject
Working with Drives and Folders
Working with Files
FileSystemObject Sample Code
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