option1.coffee

class @E

  @on: (selector, eventName, callback) ->
    $(document).on eventName, selector, (event) =>
      el = $(event.currentTarget)
      callback(event, el)

  @click: (selector, callback) ->
    @on selector, 'click', (event) =>
      target = $(event.currentTarget)
      unless callback(event, target) == true
        event.preventDefault()

# usage example

E.click '[showmodal]', (e, el) ->
  show $ el.attr('href')

E.click '[hidemodal]', (e, el) ->
  modal = $ el.closest('.modal')
  hide $ el.closest('.modal')