Inserts a new element in order

gistfile1.coffee

$.fn.insertInOrder = (newElement, iterator) ->
  $container  = $(this)
  $siblings   = $container.children()
  $newElement = $(newElement)

  if $siblings.length == 0
    $container.append($newElement)
    return this

  index = _.sortedIndex $siblings, newElement, iterator

  if index == $siblings.length
    $container.append $newElement
  else
    $($siblings[index]).before($newElement)

  this