OBJECT: Match
Implemented
in version 5.0
The Match
object is used to access the three read-only properties associated with
the results of a search and match operation that uses a regular expression.
Simply put, a regular expression is a string pattern that you can
compare against all or a portion of another string. However, in all
fairness, be warned that regular expressions can get very complicated.
The RegExp object can be used to search for and match string
patterns in another string. A Match object is created each time
the RegExp object finds a match. Since, zero or more matches
could be made, the RegExp object actually return a collection
of Match objects which is refered to as a Matches collection.
The following code is a simplier, working version of a program published
by Microsoft.
Code:
<%
'this sub finds the matches
Sub RegExpTest(strMatchPattern, strPhrase)
'create variables
Dim objRegEx, Match, Matches, StrReturnStr
'create instance of RegExp object
Set objRegEx = New RegExp
'find all matches
objRegEx.Global = True
'set case insensitive
objRegEx.IgnoreCase = True
'set the pattern
objRegEx.Pattern = strMatchPattern
'create the collection of matches
Set Matches = objRegEx.Execute(strPhrase)
'print out all matches
For Each Match in Matches
strReturnStr = "Match
found at position "
strReturnStr = strReturnStr
& Match.FirstIndex & ". Match Value is '"
strReturnStr = strReturnStr
& Match.value & "'." & "<BR>" & VBCrLf
'print
Response.Write(strReturnStr)
 : Next
End Sub
'call the subroutine
RegExpTest "is.", "Is1 is2 Is3 is4"
%>
Output:
Match found at position 0. Match Value is 'Is1'.
Match found at position 4. Match Value is 'is2'.
Match found at position 8. Match Value is 'Is3'.
Match found at position 12. Match Value is 'is4'.
PROPERTIES
FirstIndex Property
This property returns the position, counted from the left with the first
position being numbered zero, in a string where a match was made.
Syntax: Match.FirstIndex
Length Property
This property returns the length of the matched text found in a search
string.
Syntax: Match.Length
Value Property
This property returns the actual text that was matched during the search.
Syntax: Match.Value
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