A coffee script version of the jQuery plugin structure outlined at http://engineering.yp.com/post/jquery-oo-plugins

jQuery Plugin

class MyPlugin
  constructor: (element, options) ->
    @elem = $(element)
    @settings = $.extend(param: "defaultValue", options or {})

  # Public method
  publicMethod: () ->
    console.log "publicMethod() called!"

$.fn.myplugin = (options) ->
  @each ->
    element = $(this)
    dataName = 'myplugin'

    # Return early if this element already has a plugin instance
    return if element.data(dataName)

    # pass options to plugin constructor
    myplugin = new MyPlugin(this, options)

    # Store plugin object in this element's data
    element.data dataName, myplugin