IsEmpty Variable Testing Function

IsEmpty Variable Testing Function
Before you can do anything with a variable, it must exist. This function helps ensure that session variables and the like have been initialized before you try to use them.

If you had a variable called LogonID, your syntax would be:

NoLogon = IsEmpty(LogonID)

if NoLogon = TRUE then
response.write "you must log on before you view this page."
end if

Variable Testing Functions

Introduction to ASP Ebook

Download this ebook to get everything you need to know about learning ASP - from a step by step tutorial to function lists, sample code, common errors and solutions, and much more! 101 pages.




RSS
Editor's Picks Articles
Top Ten Articles
Previous Features
Site Map





Content copyright © 2022 by Lisa Shea. All rights reserved.
This content was written by Lisa Shea. If you wish to use this content in any manner, you need written permission. Contact Lisa Shea for details.