m = Element.prototype.matches or

Element.prototype.matchesSelector or
Element.prototype.mozMatchesSelector or
Element.prototype.msMatchesSelector or
Element.prototype.oMatchesSelector or
Element.prototype.webkitMatchesSelector

Quails.matches = (element, selector) ->

if selector.exclude?
  m.call(element, selector.selector) and not m.call(element, selector.exclude)
else
  m.call(element, selector)

# get and set data on a given element using “expando properties” # See: developer.mozilla.org/en-US/docs/Glossary/Expando expando = '_ujsData'

Quails.getData = (element, key) ->

element[expando]?[key]

Quails.setData = (element, key, value) ->

element[expando] ?= {}
element[expando][key] = value

# a wrapper for document.querySelectorAll # returns an Array Quails.$ = (selector) ->

Array.prototype.slice.call(document.querySelectorAll(selector))