Too often lately it happens that users are filling out the email input field of my forms and get an validation error because they copied a space sign in the end of the email address string. Mostly it is not transparent for them, why they get a validation error, and thus get angry and jump off. How can this situation be handled?
(1) How can the email address string be trimmed before validation?
(2) Or how can the validational algorithm be made insensitive for a trailing space sign?
I am using TYPO3 CMS V9 and the correspondant formframework extension.
Any suggestions?