TYPO3 Core

I like this idea, there are dozens of javascript libraries that could be useful, even JQuery-free like https://github.com/jshjohnson/Choices

Hi Benni,

I am talking about editing an existing record.

https://github.com/jshjohnson/Choices

Looks interesting and this particular lib would allow a new TCA type tags f.e. as well. But this is not part of this feature request. Unless there is an issue somewhere, a pre-task could be a good call at which a library is evaluated to allow more TCA field types.