IE11下CKEditor在Bootstrap Modal中下拉问题的解决

$.fn.modal.Constructor.prototype.enforceFocus = function() {
 $(document)
  .off('focusin.bs.modal')
  .on('focusin.bs.modal', $.proxy(function (e) {
  if (document !== e.target &&
   this.$element[0] !== e.target &&
   !this.$element.has(e.target).length &&
   !$(e.target.parentNode).closest(".cke").length) {
   
   this.$element.trigger('focus')
  }
  }, this))
};

Modal.prototype.enforceFocus = function () {
 $(document)
  .off('focusin.bs.modal') // guard against infinite focus loop
  .on('focusin.bs.modal', $.proxy(function (e) {
  if (document !== e.target &&
   this.$element[0] !== e.target &&
   !this.$element.has(e.target).length) {
   this.$element.trigger('focus')
  }
  }, this))
 }