Сохранить последнюю сортировку в bootstrap-sortable

$( document ).ready(function() {
  var ths = $('.sortable th:not([data-defaultsort="disabled"])')
  if (localStorage.sort) {
    var sort = JSON.parse(localStorage.sort)
    var th = $('.sortable th[data-sortcolumn=' + [sort.index] + ']')
    if (!th) return
    if (sort.direction === 'up') th.click()
    th.click()
  }
  function saveSort(index, direction) {
    localStorage.sort = JSON.stringify({ index: index, direction: direction })
  }
  $(ths).on('click', function() {
    var index = $(this).attr('data-sortcolumn')
    var direction = $(this).hasClass('down') ? 'up' : 'down'
    saveSort(index, direction)
  })
});