| /** |
| * navbar-ontop.js 1.0.0 |
| * Add .navbar-ontop class to navbar when the page is scrolled to top |
| * Make sure to add this script to the <head> of page to avoid flickering on load |
| */ |
| |
| (function() { |
| |
| var className = "navbar-ontop" |
| |
| // we start hidden, to avoid flickering |
| document.write("<style id='temp-navbar-ontop'>.navbar {opacity:0; transition: none !important}</style>") |
| |
| function update() { |
| // toggle className based on the scrollTop property of document |
| var nav = document.querySelector(".navbar") |
| |
| if (window.scrollY > 15) |
| nav.classList.remove(className) |
| else |
| nav.classList.add(className) |
| } |
| |
| document.addEventListener("DOMContentLoaded", function(event) { |
| $(window).on('show.bs.collapse', function (e) { |
| $(e.target).closest("." + className).removeClass(className); |
| }) |
| |
| $(window).on('hidden.bs.collapse', function (e) { |
| update() |
| }) |
| update() |
| // still hacking to avoid flickering |
| setTimeout(function() { |
| document.querySelector("#temp-navbar-ontop").remove() |
| }) |
| }); |
| |
| window.addEventListener("scroll", function() { |
| update() |
| }) |
| |
| })(); |