VBScript Tutorials - Herong's Tutorial Examples - v6.02, by Herong Yang
Array References Work Like Arrays
This section provides a tutorial example on how to use an array reference like an array to access referenced array elements, to re-size the referenced array, and to pass the referenced array into functions.
After learning that a scalar variable can be used to store the reference of an array, let's try to learn more about array reference:
To show you how an array reference works I wrote the following example, array_reference.html:
<html> <body> <!-- array_reference.html - Copyright (c) 1998 HerongYang.com. All Rights Reserved. --> <pre> <script language="vbscript"> Dim aReference Dim anArray(1) anArray(0) = "Dog" anArray(1) = "Cat" aReference = anArray 'An array reference is assigned aReference(0) = "Pig" 'Accessing an element through the reference ReDim Preserve aReference(2) 'Re-sizing the referenced array aReference(2) = "Fox" upperLimit = UBound(aReference) 'The referenced array is passed document.writeln("TypeName(aReference): " & TypeName(aReference)) document.writeln("UBound(aReference): " & upperLimit) For Each e In aReference document.writeln(" " & e ) Next </script> </pre> </body> </html>
Here is the output:
TypeName(aReference): Variant() UBound(aReference): 2 Pig Cat Fox
The output confirms that all notes mentioned earlier in this section are true.
Table of Contents
Introduction of VBScript - Visual Basic Scripting Edition
Variant Data Type, Subtypes, and Literals
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
Assigning an Array to a Scalar Variable
►Array References Work Like Arrays
"Array()" Function - Returning a Scalar Reference of an Array
"Type mismatch" Runtime Error - Assignments to Array Variables
Conditional Statements - "If ... Then" and "Select Case"
Loop Statements - "For", "While", and "Do"
"Function" and "Sub" Procedures
Inspecting Variables Received in Procedures
Error Handling Flag and the "Err" Object
Regular Expression Pattern Match and Replacement
scrrun.dll - Scripting Runtime DLL Library
IE Web Browser Supporting VBScript