So just for my own understanding:

``` coffeescript
# Needs to be wrapped in a doc ready because the element with
# class="js-update-current-time" may not have been loaded at the time that
# this script runs.
$ ->
  $(".js-update-current-time").on "click", ->
    doWhatever()

# Does not need to be wrapped in a doc ready, because we are binding the event
# handler to the document itself, which is available immediately.
$(document).on "click", ".js-update-current-time", ->
  doWhatever()
```

Is that right?