git.roojs.org Git - bootswatch/blob - js/application.js

   1 (function ($) {
   2
   3         $(function(){
   4
   5                 // fix sub nav on scroll
   6                 var $win = $(window),
   7                                 $nav = $('.subnav'),
   8                                 navHeight = $('.navbar').first().height(),
   9                                 navTop = $('.subnav').length && $('.subnav').offset().top - navHeight,
  10                                 isFixed = 0;
  11
  12                 processScroll();
  13
  14                 $win.on('scroll', processScroll);
  15
  16                 function processScroll() {
  17                         var i, scrollTop = $win.scrollTop();
  18                         if (scrollTop >= navTop && !isFixed) {
  19                                 isFixed = 1;
  20                                 $nav.addClass('subnav-fixed');
  21                         } else if (scrollTop <= navTop && isFixed) {
  22                                 isFixed = 0;
  23                                 $nav.removeClass('subnav-fixed');
  24                         }
  25                 }
  26
  27         });
  28
  29 })(window.jQuery);