How to get the code of Rshiny Adding and removing UI objects?


I'm using insertUI and removeUI.I don't know how to achieve the function like the picture.Especially the selected removeUI.



I would like you to refer to our shiny-examples present @ . One of the example apps there named 111-insert-ui does similar stuff.

Please let us know if that doesn't solve your problem yet.
Thanks for reaching out to shiny team.


Thanks for your answer.I had look through it @
However,I want to know how to insert and remove a few common shiny input objects.I think it's another example just like this@ don't know how to get this code.