What Is an Array?

VBScript Tutorials - Herong's Tutorial Examples - Version 5.20, by Dr. Herong Yang

∟What Is an Array?

This section provides an introduction of what is an array. VBScript supports fixed size arrays and dynamic size arrays.

Like many other programming languages, VBScript supports the concept of array as a built-in data structure with the following features:

An array can be used to store a collection of data elements.
VBScript supports two types of arrays: fixed size array and dynamic size array
A fixed size array is an array declared with a fixed number of elements.
A dynamic size array is an array declared with no size. But its size can be dynamically changed later many times.
An array must be associated to a variable for referencing.
Each element in an array is associated with a unique index number. By default, index number starts from 0.
A specific element in an array can be referred by the index number.
A number of built-in functions are provided to work with arrays.
The "For Each" loop statement is provided as an easy way to loop through all elements in an array.
"Erase" statement is provided as a quick way to remove all values from an array.

Other sections of this chapter provide more details on how define an array and how to use an array.

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