Edit: Trying to make bindings to JS from R via Shiny, looking for direction on where documentation for function/methods is.

Shiny repex here. I am looking at console.

app_ui <- function(request) {
  tagList(
    # Leave this function for adding external resources
    tags$head(
      tags$script(
      "  var DT_table = new Shiny.InputBinding();
        $.extend(DT_table, {
          find: function(scope) {
            // JS logic $(scope).find('whatever')
            console.log($('#table1'))
            var table = $('#table1').data();
            console.log(table)
          },
          getValue: function(el) {
            // JS code to get value
          },
          setValue: function(el, value) {
            // JS code to set value
          },
          receiveMessage: function(el, data) {
            // this.setValue(el, data);
          },
          subscribe: function(el, callback) {
            $(el).on('click.DT_table', function(e) {
              callback();
            });
            
          },
          unsubscribe: function(el) {
            $(el).off('.DT_table');
          }
        });
        Shiny.inputBindings.register(DT_table, 'shiny.whatever');
        "
      )
    ),
    # Your application UI logic
    fluidPage(
      h1("DT.V2"),
      shiny::verbatimTextOutput("colnames"),
      br(),
      DT::DTOutput("table1")
    )
  )
}

app_server <- function(input, output, session) {
  # Your application server logic
  data("iris")
  
  output[["table1"]] <- 
    DT::renderDT({
      DT::datatable(
        iris
      )
    })
}


shinyApp(app_ui, app_server)

I am trying to build some custom bindings between Shiny and Javascript and am at a bit of a loss as to where to find documentation on the JavaScript methods (if thats even the right term?). FYI in Reprex I am using the golem input binding wireframe.

In the Reprex I have printed the object of 'table1' to the console, easy. After that, however, I only found the 'data' method with a lot of inspecting trial and error. Looking here would be the sensible first place, but for example $('#table1').DataTable(); returns an error ('Uncaught TypeError: $(...).DataTable is not a function').

Where can I find which methods I can use? Eventually I would like to get all the index's or values of a column on a given event.