Please visit our sponsors !

The InStrRev Function

The InStrRev function returns the position of the first occurrence of one string within another. The search begins from the end of string, but the position returned counts from the beginning of the string.

The InStrRev function can return the following values:

• If string1 is "" - InStrRev returns 0
• If string1 is Null - InStrRev returns Null
• If string2 is "" - InStrRev returns start
• If string2 is Null - InStrRev returns Null
• If string2 is not found - InStrRev returns 0
• If string2 is found within string1 - InStrRev returns the position at which match is found
• If start > Len(string2) - InStrRev returns 0

Tip: Also look at the InStr function

Syntax

InStrRev(string1,string2[,start[,compare]])

Example 1

dim txt,pos
txt="This is a beautiful day!"
pos=InStrRev(txt,"his")
document.write(pos)

Output:

2

Example 2

dim txt,pos
txt="This is a beautiful day!"
'textual comparison
pos=InStrRev(txt,"B",-1,1)
document.write(pos)

Output:

11

Example 3

dim txt,pos
txt="This is a beautiful day!"
'binary comparison
pos=InStrRev(txt,"T")
document.write(pos)

Output:

1

Example 4

dim txt,pos
txt="This is a beautiful day!"
'binary comparison
pos=InStrRev(txt,"t")
document.write(pos)

Output:

15

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

Search W3Schools:

What Others Say About Us

Does the world know about us? Check out these places:

Dogpile Alta Vista MSN Google Excite Lycos Yahoo Ask Jeeves

We Help You For Free. You Can Help Us!

• Tell your newsgroup or mailing list
• Link to us from your pages
• Help us correct errors and broken links
• Help us with spelling and grammar
• Validate the XHTML code of this page

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

Copyright 1999-2002 by Refsnes Data. All Rights Reserved

How we converted to XHTML