wrap this in a CoffeeScript class, something like this, it will be a lot cleaner:

```
class OneTimeModal

  constructor: ($el) ->
    @$el = $el
    @ui = 
         datePicker: @$el.find('.date-picker')
         saveBtn: @$el.find('.save-button')
    @_initDatePicker()
    @_bindEvents()

  _initDatePicker: ->
    @ui.datePicker.Zebra_DatePicker(...)
  
  _bindEvents: ->
    @ui.saveBtn.click(-> ...)

$(document).ready(-> new OneTimeModal($('#one_time_modal'))
```

This will also enable to reuse this class if you ever need to (not likely so much in this case) but still adds to clarity.