jump through placerhold of coc.nvim

README.txt

g:coc_snippet_next                                      g:coc_snippet_next

        Trigger key for going to the next snippet position, applied in insert
        and select mode.

        Only works when snippet session is activated.

        Default: <C-j>

g:coc_snippet_prev                                      g:coc_snippet_prev

        Trigger key for going to the previous snippet position, applied in
        insert and select mode.

        Only works when snippet session is activated.

        Default: <C-k>