gistfile1.txt

class @GroupActionMenuHandler
  bind: ->
    $(document).on 'click', '.group-action-menu a', (e) =>
      # The following line triggers error: GroupActionMenuHandler.selectMenuItem is not a function
      this.selectMenuItem $(e.target).data('id')
      false

  selectMenuItem: (selectedItem) ->
    alert 'hello'



<script>
$(document).ready(function() {
    groupActionMenuHandler = new GroupActionMenuHandler();
    groupActionMenuHandler.bind()
  })
</script>