From http://www.w3schools.com (Copyright Refsnes Data)
A variable is used to store information.
If the variable is declared outside a procedure it can be changed by any script in the ASP file. If the variable is declared inside a procedure, it is created and destroyed every time the procedure is executed.
Declare a variable
Variables are used to store information. This example demonstrates how to declare a variable, assign a value to it, and use the value in a text.
Declare an array
Arrays are used to store a series of related data items. This example demonstrates how to declare an array that stores names.
Loop through the HTML headers
How to loop through the six headers in HTML.
Time-based greeting using VBScript
This example will display a different message to the user depending on the time on the server.
Time-based greeting using JavaScript
This example is the same as the one above, but the syntax is different.
A variable declared outside a procedure can be accessed and changed by any script in the ASP file.
A variable declared inside a procedure is created and destroyed every time the procedure is executed. No scripts outside the procedure can access or change the variable.
To declare variables accessible to more than one ASP file, declare them as session variables or application variables.
Session variables are used to store information about ONE single user, and are available to all pages in one application. Typically information stored in session variables are name, id, and preferences.
Application variables are also available to all pages in one application. Application variables are used to store information about ALL users in a specific application.
From http://www.w3schools.com (Copyright Refsnes Data)