1. $("点击的id或者class").click(function (event) {
  2. $("显示或者隐藏的菜单id或者class").toggle();
  3. event.stopPropagation();
  4. });


  1. $(document).on('click', function(e) {
  2. if (!$(e.target).closest('菜单的id或者class').length) {
  3. $('菜单的id或者class').hide();
  4. }
  5. });