Color - Param: ${fn: join (paramValues [" colors "], ', ')} & lt; Br/& gt;
This error: The function fn: join is undefined
Beginning with the following is not an error:
<% @ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" % & gt;
Add do not add what's the difference?
CodePudding user response:
Suggest you go to learn JSTL