manage document title to set info about number of notifications

document_title.coffee

# manage document title
Title =

  regex: /\(\d*\) \| /

  # set number of new items in document title
  set: (number) ->
    # update value
    if document.title.match(@regex)?
      document.title = document.title.replace(@regex, '(' + number + ') | ')
    # set value
    else
      document.title = '(' + number + ') | ' + document.title

  # remove number from title
  reset: ->
    if document.title.match(@regex)?
      document.title = document.title.replace(@regex, '')