enable button based on input on custom page

I have a "test db connection" page on which the user enters the db info and tests the connection to the database. I don't wish the "Test Connection" button to be enabled until each text field is not blank.

How can I achieve this?

Thanks for the help.

Until today there isn't notify flag ability in InstallOptions plugin for text fields, probably IOex could do that.

What is IOex?

Thanks.

InstallOptionsEx.

Stu

Sorry 🙁 how remiss of me!.