Welcome to jBASE's new documentation site! Many answers to your questions can be found by searching the Knowledgebase or viewing the jBASE Documentation. We also have a Google Group for peer discussion about jBASE. If you are unable to find the information you are looking for, jBASE Support will be glad to assist in resolving your technical problems. Enjoy and please provide comments and feedback .

How can we help you?



The function will check that the expression consists of entirely alphabetic characters. It takes the general form:


Where expression can return a result of any type. 

The ISALPHA() function will return TRUE (1) if the expression consists of entirely alphabetic characters. The function will return FALSE (0) if any character in the expression is not alphabetic.

International Mode 

When the ISALPHA() function is used in International Mode the properties of each character is determined according to the Unicode Standard.

Go back to jBASE BASIC.

Was this article helpful?