Hello Robax,
This isn't included in Dynamic Forms, you will need to get a script injector module and place it on the same page in which you wish to place jQuery functions on dynamic fields. You can visit
http://www.snowcovered.com and use the search to find script injectors. There are a few free modules and also ones you will have to pay for.
Once you have installed your script injector and loaded that module onto your page that will use jQuery you will add the files to your server and use the path to these files within your script injector.
Then you can go into your Custom Javascript tab in Module Configuration and add the initial javascript which is in essence calling the jQuery functions.
If you have any questions please let us know.
Thanks,
Ryan