Does anyone know if there is a way to popup a warning message about open subtasks when you close a ticket?

[Nicole Downes]

If you have the JIRA Misc Workflow Extensions plugin you can setup post functions that make the parent task move with the status of the subtasks.  When multiple subtasks exist, the parent cannot be manually moved to closed unless all the subtasks are also closed. I have these postfunctions set so the parent moves to closed automatically when all the subtasks are completed.

[Betsi Pinkus]

Thanks! This is very helpful.