Passing objects to addEventListener. Here’s a super awesome trick I had no idea about until someone pointed out you could do this. addEventListener can take an object as a second argument that will look for a method called handleEvent and call it! No need for binding “this” so it will pass around the context correctly, the context is the object …

main.coffee

object =
  init: ->
    btnEl = document.querySelector 'button'
    btnEl.addEventListener 'click', this
    btnEl.addEventListener 'touchstart', this

  handleEvent: (e) ->
    switch e.type
      when 'click'
        @action(e.type)
      when 'touchstart'
        @action(e.type)

  action: (type) ->
    console.log "This is action #{type}"

object.init()