INFO: Reserved Words in VBScript 5.5 and JScript 5.5

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This article was previously published under Q216528

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SUMMARY

There are certain words that the scanner (parser) in Visual Basic Scripting Edition (VBScript) version 5.5 and JScript version 5.5 considers "reserved". Although these words are not all in use, they are still treated as reserved and cannot be used as identifiers or variables.

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MORE INFORMATION

VBScript

The following words are reserved in Microsoft VBScript:

And
As
Boolean
ByRef
Byte
ByVal
Call
Case
Class
Const
Currency
Debug
Dim
Do
Double
Each
Else
ElseIf
Empty
End
EndIf
Enum
Eqv
Event
Exit
False
For
Function
Get
GoTo
If
Imp
Implements
In
Integer
Is
Let
Like
Long
Loop
LSet
Me
Mod
New
Next
Not
Nothing
Null
On
Option
Optional
Or
ParamArray
Preserve
Private
Public
RaiseEvent
ReDim
Rem
Resume
RSet
Select
Set
Shared
Single
Static
Stop
Sub
Then
To
True
Type
TypeOf
Until
Variant
Wend
While
With
Xor

JScript

The following words are reserved in Microsoft JScript:

break
case
catch
class
const
continue
debugger
default
delete
do
else
enum
export
extends
false
finally
for
function
if
import
in
instanceof
new
null
return
super
switch
this
throw
true
try
typeof
var
void
while
with

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REFERENCES

For more information on Microsoft JScript and VBScript, see the Microsoft Windows Script Technologies Web site:

http://msdn2.microsoft.com/en-us/library/ms950396.aspx (http://msdn2.microsoft.com/en-us/library/ms950396.aspx)

For the complete ECMA-262 specification (on which Microsoft JScript is based), see the following ECMA site:

http://www.ecma.ch/ecma1/STAND/ECMA-262.htm (http://www.ecma.ch/ecma1/STAND/ECMA-262.htm)

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APPLIES TO

Microsoft Internet Explorer 5.5
Microsoft JScript 5.5
Microsoft Visual Basic, Scripting Edition 5.5

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kbinfo kbscript KB216528

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Retired KB Content Disclaimer

This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.

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