Test Multiple Selects

  # make the multiple select
  HTMLon() # switch to html mode
  data(state)
  HTMLselect("favoriteAmericanState", state.name, size=10, multiple='multiple', id="fstate") # generate the select box

After selecting one or more of the inputs in the select box, hit F9 or the calculate button and see that the following outputs change:

  // This is a javascript block
  // We manually extract the selected elements and create
  // an R command vector that we subsequently send.
  var el = dojo.byId("fstate");
  var result = "fstate=c(";
  for (i=0; i < el.length; i++) {
    if (el.options[i].selected)
      result = result + "'" + el.options[i].text + "',";
  }
  result = result + ")";
  rpad.send("R", result); // note: do not make this the last command, or it chokes.
  " "

  # This is an R block to see if we updated ok in R
  cat("fstate =\n")
  fstate