changing font size in R DataTables (DT)

user_6135306 0
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Have been trying to change the font size of all text in the tables generated by DT. However, I could only figure out how to change the size of the records using formatStyle(names(datCalc), fontSize = '12px'). The column headers and buttons have text of the same size. Using R Markdown in RStudio.

dt r-markdown r formatting
4 Answers

Was able to change the header and the footer by changing the CSS with the JS table and column content font size with the formatStyle as follows. However, the header and the footer font size stayed the same. I would like to change header/footer/body (entire font for the table) in one swoop. Is that possible?

datatable(head(iris, 20), options = list(
  initComplete = JS(
    "function(settings, json) {",
    "$(this.api().table().header()).css({'font-size': '5px', 'background-color': '#c2d1f0', 'color': '#fff'});",
    "}"))) %>%  formatStyle(columns = colnames(.$x$data), `font-size` = '12px')

Attempted to update CSS for columns with the following command without success

"$(this.api().columns().data()).css({'font-size': '5px'});"

"$(this.api().table().footer()).css({'font-size': '10px});"

"$(this.api().tables().body()).css({'font-size': '10px'});"
user_50936250

Building on the answers given by Antex and sabeepa. If you want to chage the font size of everything, including the DT components outside of the table itself, use the table().container(). So the code would look like this:

font.size <- "10pt"

df %>% 
   DT::datatable(
     options=list(
       initComplete = htmlwidgets::JS(
          "function(settings, json) {",
          paste0("$(this.api().table().container()).css({'font-size': '", font.size, "'});"),
          "}")
       ) 
     )
user_11371400
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