VBScript Tutorials - Herong's Tutorial Examples

∟Regular Expression Pattern Match and Replacement

This chapter provides tutorial examples and notes on regular expression support in VBScript. Topics include 'RegExp' class and objects, setting up regular expressions and match option flags, applying a pattern for matches and replacements, checking MatchCollection and SubMatches collection objects, example of regular expression pattern match and replacement.

"RegExp" Class and Object for Regular Expression Support

"MatchCollection" and "SubMatches" Collection Objects

"Set oRegExp = New RegExp" - Creating RegExp Objects

Example of Regular Expression Match and Replacement

Conclusions:

• "RegExp" is a built-in class to support regular express pattern match and replacement.
• "Set oRegExp = New RegExp" creates a new "RegExp" object.
• "oRegExp.Pattern" contains the regular expression pattern.
• "oRegExp.Global" flags that multiple matches should to be performed.
• "oRegExp.IgnoreCase" flags that cases should be ignored when matching characters.
• "oRegExp.Test()" returns True if any matches found.
• "oRegExp.Replace()" returns a copy of the string with matches replaced.
• "oRegExp.Execute()" returns a MatchCollection collection of "Match" objects.
• A "Match" object contains the length, position, and string of a specific match.
• A "Match" object also contains a SubMatches collection of sub match strings.

Table of Contents

 About This Book

 Introduction of VBScript - Visual Basic Scripting Edition

 Variant Data Type, Subtypes, and Literals

 Arithmetic Operations

 Numeric Comparison Operations and Logical Operations

 String Operations - Concatenation and Comparison

 Variable Declaration and Assignment Statement

 Expression and Order of Operation Precedence

 Statement Syntax and Statement Types

 Array Data Type and Related Statements

 Array References and Array Assignment Statements

 Conditional Statements - "If ... Then" and "Select Case"

 Loop Statements - "For", "While", and "Do"

 "Function" and "Sub" Procedures

 Built-in Functions

 Inspecting Variables Received in Procedures

 Error Handling Flag and the "Err" Object

►Regular Expression Pattern Match and Replacement

 scrrun.dll - Scripting Runtime DLL Library

 Creating Your Own Classes

 IE Web Browser Supporting VBScript

 IIS ASP Server Supporting VBScript

 WSH (Windows Script Host)

 References

 Printable Copy - PDF Version