I personally don't like the idea of hacking directly on javascript code to achieve DT table edits in R shiny.
I would advise you to read about dataTableProxy which is a common mechanism through which to facilitate edits, and there is much content available. e.g. http://www.stencilled.me/post/2019-04-18-editable/
There is even wrapper package (though off CRAN) https://github.com/jbryer/DTedit that may be convenient
1 Like