How to fix my header getting cut off on mobile browsers? - javascript

I need help with fixing my header I can not find the problem! At the beginning it looks fine but when you scroll down it cuts part of it off. But when you scroll back up it goes normal. I think it is with the hamburger menu because when you click on it, it increases the cut off. Here is the link to the website. https://perfectparadox8400.000webhostapp.com/ and here is a gif of what happens!
Link to the picture of what happens!
I only happens when you are on a phone. I used the inspector tools to test it and I did try it on a phone to.
Here is the header code.
<header id="headerrr" class="fixed-top lode">
<div class="container">
<div id="lode" class="logo float-center">
<!-- Uncomment below if you prefer to use an image logo -->
<!-- <h1 class="text-light"><span>NewBiz</span></h1> -->
<a href="#intro">
<img id="headerr" class="bigg" src="img/l.png" heigth="100%"><div id="lod" class="lod" style=display:inline-block;vertical-align:center> Perfect Paradox's 8400</div></a>
<div id="dlod" class="loder">
<div class="fixx">
<div class="float-center lodbar">Loding...
<div id="barr" class="persent"> </div>
</div>
</div>
</div>
</div>
<script>
var w = 5;
var foo = setInterval(function () {
if(w>109) {cancelInterval(foo)}
w = w + 6.25;
document.getElementById('barr').style.width = w + '%';
}, 1000);
</script>
<nav id="lood" class="lod main-nav float-right d-none d-lg-block header">
<ul>
<li class="drop-down"><a>Home</a>
<ul>
<li>About Us</li>
<li>Portfolio</li>
<li>Team</li>
</ul>
</li>
<li class="drop-down" ><a>FTC</a>
<ul>
<li>FTC Page</li>
<li>
FTC At Home
</li>
<li>About FTC</li>
</ul>
</li>
<li>FLL</li>
<li>Junior FLL</li>
<li class="drop-down"><a>More</a>
<ul>
<li>Old Website
</li>
<li>FLL</li>
<li>Junior FLL</li>
<li>More</li>
</ul>
</li>
<li>Contact Us</li>
</ul>
</nav><!-- .main-nav -->
</div>
</header><!-- #header -->
The css.
#-webkit-keyframes rotate {
from {
-webkit-transform: rotate(0deg);
}
to {
-webkit-transform: rotate(360deg);
}
}
.lode {
height: 100% !important;
transition: all 0.5s;
}
.lod {
display: none !important;
transition: all 0.5s;
}
.bigg {
margin-left: 25% !important;
margin-right: 25% !important;
width: 50% !important;
-webkit-animation-name: rotate;
-webkit-animation-duration: 3s;
-webkit-animation-iteration-count: infinite;
-webkit-animation-timing-function: linear;
transition: all 0.5s;
}
.float-center {
margin-top: 8% !important;
transition: all 0.5s;
}
.loder {
width: 80%;
transition: all 0.5s;
}
.fixx {
position: relative;
}
.lodbar {
width: 125%;
transition: all 0.5s;
background-color: #afb0b3;
height: 0.5%;
}
.persent {
width: 0%;
transition: all 0.5s;
background-color: #5e068a;
position: absolute;
top: 0;
left: 0;
z-index: 0;
}
/*--------------------------------------------------------------
# Header
--------------------------------------------------------------*/
#headerrr {
height: 80px;
transition: all 0.5s;
z-index: 997;
transition: all 0.5s;
padding: 0px 0;
background: #fff;
box-shadow: 0px 0px 30px rgba(127, 137, 161, 0.3);
transition: all 0.5s;
}
.header {
height: 80px;
transition: all 0.5s;
z-index: 997;
padding: 20px 0;
background: transparent !important;
}
#headerrr.header-scrolledd {
height: 60px;
transition: all 0.5s;
}
#headerr.header-scrolleddd {
width: 76px;
transition: all 0.5s;
}
#headerr {
width: 100px;
transition: all 0.5s;
}
.header.header-scrolled,
.header.header-pages {
height: 60px;
padding: 10px 0;
transition: all 0.5s;
}
#headerrr .logo h1 {
font-size: 36px;
margin: 0;
padding: 0;
line-height: 1;
font-weight: 400;
letter-spacing: 3px;
text-transform: uppercase;
transition: all 0.5s;
}
#headerrr .logo h1 a {
margin: 7px 0;
transition: all 0.5s;
}
#headerrr .logo h1 a:hover {
color: #5e068a;
text-decoration: none;
transition: all 0.5s;
}
#headerrr .logo img{
padding: 0;
margin: 0px 0;
height: 100%;
transition: all 0.5s;
}
The javascript.
(function ($) {
"use strict";
// Preloader (if the #preloader div exists)
$(window).on('load', function () {
if ($('#preloader').length) {
$('#preloader').delay(100).fadeOut('slow', function () {
$(this).remove();
});
}
});
// Back to top button
$(window).scroll(function() {
if ($(this).scrollTop() > 100) {
$('.back-to-top').fadeIn('slow');
} else {
$('.back-to-top').fadeOut('slow');
}
});
$('.back-to-top').click(function(){
$('html, body').animate({scrollTop : 0},1500, 'easeInOutExpo');
return false;
});
// Initiate the wowjs animation library
new WOW().init();
// Header scroll class
$(window).scroll(function() {
if ($(this).scrollTop() > 100) {
$('.header').addClass('header-scrolled');
$('#headerrr').addClass('header-scrolledd');
$('#headerr').addClass('header-scrolleddd');
} else {
$('.header').removeClass('header-scrolled');
$('#headerrr').removeClass('header-scrolledd');
$('#headerr').removeClass('header-scrolleddd');
}
});
if ($(window).scrollTop() > 100) {
$('.header').addClass('header-scrolled');
$('#headerrr').addClass('header-scrolledd');
$('#headerr').addClass('header-scrolleddd');
}
// Smooth scroll for the navigation and links with .scrollto classes
$('.main-nav a, .mobile-nav a, .scrollto').on('click', function() {
if (location.pathname.replace(/^\//, '') == this.pathname.replace(/^\//, '') && location.hostname == this.hostname) {
var target = $(this.hash);
if (target.length) {
var top_space = 0;
if ($('#headerrr').length) {
top_space = $('#headerrr').outerHeight();
if (! $('#headerrr').hasClass('header-scrolledd')) {
top_space = top_space - 0;
}
}
$('html, body').animate({
scrollTop: target.offset().top - top_space
}, 1500, 'easeInOutExpo');
if ($(this).parents('.main-nav, .mobile-nav').length) {
$('.main-nav .active, .mobile-nav .active').removeClass('active');
$(this).closest('li').addClass('active');
}
if ($('body').hasClass('mobile-nav-active')) {
$('body').removeClass('mobile-nav-active');
$('.mobile-nav-toggle i').toggleClass('fa-times fa-bars');
$('.mobile-nav-overly').fadeOut();
}
return false;
}
}
});
// Navigation active state on scroll
var nav_sections = $('section');
var main_nav = $('.main-nav, .mobile-nav');
var main_nav_height = $('#headerrr').outerHeight();
$(window).on('scroll', function () {
var cur_pos = $(this).scrollTop();
nav_sections.each(function() {
var top = $(this).offset().top - main_nav_height,
bottom = top + $(this).outerHeight();
if (cur_pos >= top && cur_pos <= bottom) {
main_nav.find('li').removeClass('active');
main_nav.find('a[href="#'+$(this).attr('id')+'"]').parent('li').addClass('active');
}
});
});
// jQuery counterUp (used in Whu Us section)
$('[data-toggle="counter-up"]').counterUp({
delay: 10,
time: 1000
});
// Porfolio isotope and filter
$(window).on('load', function () {
var portfolioIsotope = $('.portfolio-container').isotope({
itemSelector: '.portfolio-item'
});
$('#portfolio-flters li').on( 'click', function() {
$("#portfolio-flters li").removeClass('filter-active');
$(this).addClass('filter-active');
portfolioIsotope.isotope({ filter: $(this).data('filter') });
});
});
// Testimonials carousel (uses the Owl Carousel library)
$(".testimonials-carousel").owlCarousel({
autoplay: true,
dots: true,
loop: true,
items: 1,
delay: 100
});
})(jQuery);
These are the parts with the header involved!
Please help!
I tried removing the javascript but it did not help!


You adding the on scroll shrink effect to the header
There is two ways to solve this
removing header-scrolled css or change the height of header-scrolled to according to main height mentioned in headerrr css
#headerrr.header-scrolledd {
height: 60px;
transition: all 0.5s;
}
The main height of the header is 80px you adding the header-scrolledcss onscroll in javascript the header-scrolled height of is 66px so when you scroll down the screen get shrink so change the height of header-scrolled to 80px to avoid shrink
second way is to remove the javascript for header
// Header scroll class
$(window).scroll(function() {
if ($(this).scrollTop() > 100) {
$('.header').addClass('header-scrolled');
$('#headerrr').addClass('header-scrolledd');
$('#headerr').addClass('header-scrolleddd');
} else {
$('.header').removeClass('header-scrolled');
$('#headerrr').removeClass('header-scrolledd');
$('#headerr').removeClass('header-scrolleddd');
}
});
if ($(window).scrollTop() > 100) {
$('.header').addClass('header-scrolled');
$('#headerrr').addClass('header-scrolledd');
$('#headerr').addClass('header-scrolleddd');
}
remove this code block it will remove the onscroll function for header removig this will leads to your header will not shrink on scroll
you can choose any one way
my suggestion to remove both header-scrolled and javascript code


I added this: html, body {width: auto!important; overflow-x: hidden!important} and it fixed the problem.

Related

target .class:after:hover in jQuery

I need to target this :after in jQuery:
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.a1:after {
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position: absolute;
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right: 0;
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.a1:hover:after {
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The scroll code looks like this (example):
$(function() {
var header = $("#header");
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 100) {
header.addClass("scrolled");
} else {}
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HTML:
<li><a class="a1" href="#">Portfolio</a></li>
<li><a class="a1" href="#">Services</a></li>
<li><a class="a1" href="#">Contact</a></li>
I found this out after searching alot and it worked byt i don't know how the underline can keep the hover color after i mouseleave .a1 :
$('#menuwrapper').mouseenter(function() {
if ($('#pseudo').length) {
$('#pseudo').remove();
} else {
var css = '<style id="pseudo">.a1::after{background: red !important;}</style>';
document.head.insertAdjacentHTML('beforeEnd', css);
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I tried mouseleave but it didn't work.
So i just want that if i scroll (that i know how it works) that the underline under the menu .a1 stay's black , because if i leave the underline hover it goes back to
.a1:after {
background: #3f92c3;
}
I want it to stay black.

pseudo elements like :before and :after are not the part of DOM because they are not real elements as called pseudo...so you can't target them using jQuery
As you are adding class scrolled on scroll, so better to use this class in css like
.scrolled .a1:after{
background: black;
}
$(function() {
var header = $("#header");
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 100) {
header.addClass("scrolled");
} else {
header.removeClass("scrolled");
}
});
});
body {
margin-top: 150px;
font: 13px Verdana;
height: 500px
}
#header {
list-style: none;
padding: 0;
display: flex;
}
#header li {
margin: 0 10px;
}
.a1 {
position: relative;
font-weight: bold;
text-decoration: none;
}
.a1:after {
content: '';
position: absolute;
width: 0;
height: 3px;
display: block;
margin-top: 5px;
right: 0;
background: #3f92c3;
transition: width .4s linear;
-webkit-transition: width .4s linear;
}
.a1:hover:after {
width: 100%;
left: 0;
}
.scrolled .a1:after {
background: red;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul id="header">
<li><a class="a1" href="#">Portfolio</a></li>
<li><a class="a1" href="#">Services</a></li>
<li><a class="a1" href="#">Contact</a></li>
</ul>

try to use jQuery hover method, but also you cant touch :after :before elements from jQuery
$("p").hover(function(){
$(this).css("background-color", "yellow");
}, function(){
$(this).css("background-color", "pink");});

How to animate addClass/removeclass in JQuery

I am trying to do menu. When user scroll down menu disppears, when scroll up it appears again. I have problem with adding animation effect. I do not want the menu disappearing immediately, but it will take some time. I tried with animate function but it wouldn't work.
Thanks.
<body>
<nav class="site-navbar">
</nav>
</body>
body {
height:300vh;
width:100%;
background-color:yellow;
margin:0;
padding:0;
.site-navbar {
width:100%;
height:40px;
background-color:red;
position:fixed;
top:0px;
-webkit-transition: all 0.5s ease;
-moz-transition: all 0.5s ease;
-o-transition: all 0.5s ease;
transition: all 0.5s ease
}
.nav-up {
top:-40px;
}
}
var prevScroll = 0;
$(document).scroll(function() {
var currentPos = $(this).scrollTop();
if(currentPos > prevScroll) {
$('nav').removeClass('site-navbar').addClass('nav-up');
}
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$('nav').removeClass('nav-up').addClass('site-navbar');
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prevScroll = currentPos;
})
https://jsfiddle.net/m6r8z8wp/2/

there's no need to remove class before adding a new one FIDDLE
var prevScroll = 0;
$(document).scroll(function() {
var currentPos = $(this).scrollTop();
if(currentPos > prevScroll) {
$('nav').addClass('nav-up');
} else {
$('nav').removeClass('nav-up').addClass('site-navbar');
}
prevScroll = currentPos;
});
If you remove the class you remove the transition as well

DEMO
var prevScroll = 0;
$(document).scroll(function() {
var currentPos = $(this).scrollTop();
if (currentPos > prevScroll) {
$('nav').slideUp("slow", "linear");
} else {
$('nav').slideDown("slow", "linear");
}
prevScroll = currentPos;
})
body {
height: 300vh;
width: 100%;
background-color: yellow;
margin: 0;
padding: 0;
}
.site-navbar {
width: 100%;
height: 40px;
background-color: red;
position: fixed;
top: 0px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<nav class="site-navbar">
</nav>
Alternative you can use jquery slideUp() / slideDown() for animation

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<!DOCTYPE html>
<html>
<head>
<title>Letsport</title>
<meta charset = "UTF-8">
<link rel="stylesheet" type="text/css" href="style/normalize.css">
<link href='http://fonts.googleapis.com/css?family=Lobster' rel='stylesheet' type='text/css'>
<link href='http://fonts.googleapis.com/css?family=Open+Sans:400,600,700' rel='stylesheet' type='text/css'>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script type="text/javascript" src = "script/script.js"></script>
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<body>
<nav id = "side_nav">
<div id = "nav_content">
<div id = "cross_btn">
<a href="#">
<img src="img/cross.png">
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<li>HOME</li>
<li>DOWNLOAD</li>
<li>CONTACT</li>
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</nav>
<div id = "overlay">
</div>
<section id = "home_section">
<ul>
<li id = "logo">
<img src="img/logo.png">
</li>
<li id = "stripes">
<div id = "stripe_background">
<a href="#">
<div>
<div class = "stripe"></div>
<div class = "stripe"></div>
<div class = "stripe"></div>
</div>
</a>
</div>
</li>
</ul>
<div id = "title">
<div id = "bar_up"></div>
<h1>
Letsport
</h1>
<div id = "bar_down"></div>
<div id = "slider_wrapper">
<div id = "text_slider">
<div><h2>TEAMMATES NOT SHOWING UP?</h2></div>
<div><h2>HARD TO BOOK ONLINE?</h2></div>
<div><h2>WANNA SEEK A COMPETITOR IN THE SAME LEVEL?</h2></div>
<div><h2>COME AND DOWNLOAD LETSPORT!</h2></div>
</div>
</div>
</div>
<video id = "home_video" autoplay loop>
<source src = "media/home_video.mp4">
</video>
</section>
<section id = "video_section">
<div class = "section_content">
<h1>DO YOU HAVE SAME TROUBLES?</h1>>
<div id = "interview_video">
<ul>
<li>
<video class = "each_video" class = "filter" id = "video1" loop>
<source src = "media/1.mp4">
</video>
</li>
<li>
<video class = "each_video" class = "filter" id = "video2" loop>
<source src = "media/2.mp4">
</video>
</li>
</ul>
<ul>
<li>
<video class = "each_video" class = "filter" id = "video3" loop>
<source src = "media/3.mp4">
</video>
</li>
<li>
<video class = "each_video" class = "filter" id = "video4" loop>
<source src = "media/4.mp4">
</video>
</li>
</ul>
</div>
</div>
</section>
<section id = "about_section">
<div class = "section_content">
<ul>
<li id = "about_desc" class = "about hidden">
<h1>TIRED</h1>
<h2>OF THESE PROBLEMS?</h2>
<h3>DOWNLOAD "LETSPORT" TO HELP YOU!</h3>
<p>"Letsport" is a mobile application which helps you to find your sportmates. Besides, you can even book online! Download "Letsport" and enjoy!</p>
</li>
<li id = "mock_up">
<img src="img/mockup.png">
</li>
</ul>
</div>
</section>
</body>
</html>
body {
margin: 0;
font-family: 'Open Sans', sans-serif;
color: white;
height: 100%;
width: 100%;
position: relative;
}
a {
text-decoration: none;
}
h1 {
padding: 30px 0 0 0;
margin: 0;
font-weight: 700;
font-size: 2.5em;
}
h2 {
margin: 0px;
font-weight: 600;
font-size: 1.3em;
}
ul {
list-style: none;
}
.section_content {
width: 95%;
margin: 0 auto;
padding: 100px 0;
text-align: center;
}
#side_nav {
position: fixed;
top: 0;
right: -500px;
width: 500px;
height: 100%;
background-color: rgba(0, 0, 0, 0.9);
z-index: 100;
}
#side_nav li {
padding: 5px 0;
}
#side_nav li a {
color: white;
font-size: 1.5em;
letter-spacing: 0.3em;
}
#side_nav li a:hover {
color: yellow;
text-decoration: underline;
}
#side_nav #nav_content {
margin: 15px;
}
#side_nav #nav_content #cross_btn {
padding: 10px;
}
#overlay {
display: none;
top: 0;
left: 0;
position: fixed;
width: 100%;
height: 100%;
background-color: rgba(255, 255, 255, 0.3);
}
/******************************************
HOME SECTION
******************************************/
#home_section {
width: 100%;
height: 720px;
}
#home_section ul {
width: 100%;
padding: 0;
}
#home_section ul li {
display: inline-block;
}
#logo {
margin: 15px;
}
#stripes {
position: fixed;
right: 0;
top: 0;
margin: 15px;
float: right;
}
#stripe_background {
padding: 10px;
}
.active_stripe {
background-color: rgba(0, 0, 0, 0.5);
}
.stripe {
width: 30px;
height: 3px;
margin: 5px 0;
background-color: white;
}
#home_section #home_video {
position: fixed;
top: 0;
left: 0;
min-width: 100%;
min-height: 100%;
width: auto;
height: auto;
z-index: -100;
background-size: cover;
filter: brightness(35%);
-webkit-filter: brightness(35%);
-moz-filter: brightness(35%);
-ms-filter: brightness(35%);
-o-filter: brightness(35%);
}
#home_section #title {
margin: 150px auto;
text-align: center;
}
#home_section #title h1 {
padding: 15px 0 30px 0;
margin: 0;
font-family: 'Lobster', cursive;
font-size: 6em;
}
#home_section #title #bar_up {
position: fixed;
left: 50%;
width: 50%;
height: 2px;
margin: 0 0 0 -25%;
background-color: white;
}
#home_section #title #bar_down {
position: fixed;
left: 50%;
width: 50%;
height: 2px;
margin: 0 0 0 -25%;
background-color: white;
}
#home_section #title h2 {
margin-top: 30px;
font-weight: 400;
font-size: 1.3em;
letter-spacing: 0.5em;
color: #cecece;
}
#slider_wrapper {
width: 60%;
position: relative;
margin: 0 auto;
}
#text_slider div {
width: 100%;
position: absolute;
text-align: center;
}
/******************************************
VIDEO SECTION
******************************************/
#video_section {
background-color: white;
}
#video_section h1 {
color: #333333;
}
#video_section h2 {
color: #505050;
}
.each_video {
width: 200px;
filter: brightness(35%);
-webkit-filter: brightness(35%);
-moz-filter: brightness(35%);
-ms-filter: brightness(35%);
-o-filter: brightness(35%);
}
.filter {
filter: brightness(100%);
-webkit-filter: brightness(100%);
-moz-filter: brightness(100%);
-ms-filter: brightness(100%);
-o-filter: brightness(100%);
-webkit-transition: 1s -webkit-filter linear;
-moz-transition: 1s -moz-filter linear;
-moz-transition: 1s filter linear;
-ms-transition: 1s -ms-filter linear;
-o-transition: 1s -o-filter linear;
transition: 1s filter linear;
}
#video_section ul {
margin: 0;
}
#video_section ul li {
display: inline-block;
padding: 0;
}
/******************************************
ABOUT SECTION
******************************************/
#about_section {
background-color: #5489dd;
margin-top: 0;
position: relative;
}
#about_section ul {
margin: 0;
}
#about_section ul li {
width: 500px;
display: inline-block;
vertical-align: top;
}
#about_section ul #about_desc {
text-align: right;
}
#about_section ul #about_desc h1 {
margin: 0;
padding-bottom: 0;
font-size: 8em;
}
#about_section ul #about_desc h2 {
font-size: 2em;
}
.about {
transform-style: preserve-3d;
-webkit-transform-style: preserve-3d;
-moz-transform-style: preserve-3d;
-ms-transform-style: preserve-3d;
-o-transform-style: preserve-3d;
transform: perspective(1000px);
-webkit-transform: perspective(1000px);
-moz-transform: perspective(1000px);
-ms-transform: perspective(1000px);
-o-transform: perspective(1000px);
}
.about h1, .about h2, .about h3, .about p {
transition: all 0.8s ease;
-webkit-transition: all 0.8s ease;
-moz-transition: all 0.8s ease;
-ms-transition: all 0.8s ease;
-o-transition: all 0.8s ease;
}
.about.hidden h1, .about.hidden h2, .about.hidden h3, .about.hidden p {
opacity: 1;
transform: translate3d(0, 0, 400px) rotateY(40deg);
-webkit-transform: translate3d(0, 0, 400px) rotateY(40deg);
-moz-transform: translate3d(0, 0, 400px) rotateY(40deg);
-ms-transform: translate3d(0, 0, 400px) rotateY(40deg);
-o-transform: translate3d(0, 0, 400px) rotateY(40deg);
}
$(document).ready(function(){
var homeSectionTopPosY = $('#home_section').offset().top,
videoSectionTopPosY = $('#video_section').offset().top,
chooseSectionTopPosY = $('#choose_section').offset().top,
joinSectionTopPosY = $('#join_section').offset().top,
makeUpSectionTopPosY = $('#make_up_section').offset().top,
downloadSectionTopPosY = $('#download_section .section_content h1').offset().top,
contactSectionTopPosY = $('#contact_section').offset().top,
aboutSectionTopPosY = $('#about_section').offset().top;
// Anchor to the position
$('#home_link').on('click', function(){
$('html, body').animate({scrollTop: 0});
});
$('#download_link').on('click', function(){
$('html, body').animate({scrollTop: chooseSectionTopPosY});
});
$('#contact_link').on('click', function(){
$('html, body').animate({scrollTop: contactSectionTopPosY});
});

I've worked on a few single-page sites recently and have changed my approach to it a few times. Currently I use this method:
// Scroll smoothly to an element
function smooth_scroll_to(elem)
{
var offset = 0;
offset = $(elem).offset().top;
$('html, body').animate({
scrollTop: offset
}, 550);
}
// Initiate smooth scroll to area based on navigation item title attr
$('#side_nav li a').click(function(e){
e.preventDefault();
var elem = $(this).attr('title');
smooth_scroll_to(elem);
});
// Add title="#IDOFELEMENT" to each nav item
<ul>
<li><a title="#home_section" href="#" id = "home_link">HOME</a></li>
<li><a title="#download_section" href="#" id = "download_link">DOWNLOAD</a></li>
<li><a title="#contact_section" href="#" id = "contact_link">CONTACT</a></li>
</ul>
Using HREF seems more user friendly and cleaner. (Credit to #KarelG)
// Always use ID's and only place the text portion in the title
<li>HOME</li>
var elem = $(this).attr('href');
This will also allow for navigation in the event of a JS error or similar preventing the animation.

I've run into the same problem, trying to implement a current menu item highlight for a one page site when being at a section which has an ID which is part of the menu. In this case instead of offset = $(elem).offset().top; I had secPosition = $(theID).offset().top;
Here is the original snippet: Source
<script type="text/javascript">
(function($) {
$(document).ready(function() {
var navChildren = $("#top-menu li").children();
var aArray = [];
for (var i = 0; i < navChildren.length; i++) {
var aChild = navChildren[i];
var ahref = $(aChild).attr('href');
aArray.push(ahref);
}
$(window).scroll(function() {
var windowPos = $(window).scrollTop();
var windowHeight = $(window).height();
var docHeight = $(document).height();
for (var i = 0; i < aArray.length; i++) {
var theID = aArray[i];
var secPosition = $(theID).offset().top;
secPosition = secPosition - 135;
var divHeight = $(theID).height();
divHeight = divHeight + 90;
if (windowPos >= secPosition && windowPos < (secPosition + divHeight)) {
$("a[href='" + theID + "']").parent().addClass("active");
} else {
$("a[href='" + theID + "']").parent().removeClass("active");
}
}
});
});
})(jQuery);
</script>
The secPosition value was calculated completely wrong all the time, I've checked in the chrome debugger. Then what helped me was also to initialise the secPosition variable with 0 as the value, as described above by JohnDevelops. I don't quite understand why it makes a difference but it does work!
So this is the final working version:
<script type="text/javascript">
jQuery(document).ready(function(){
jQuery("button.et_pb_contact_submit").text('Senden');
});
</script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.5.2/animate.min.css">
<script type="text/javascript">
(function($) {
$(document).ready(function() {
var navChildren = $("#top-menu li").children();
var aArray = [];
for (var i = 0; i < navChildren.length; i++) {
var aChild = navChildren[i];
var ahref = $(aChild).attr('href');
aArray.push(ahref);
}
$(window).scroll(function() {
var secPosition = 0;
var windowPos = $(window).scrollTop();
var windowHeight = $(window).height();
var docHeight = $(document).height();
for (var i = 0; i < aArray.length; i++) {
var theID = aArray[i];
secPosition = $(theID).offset().top;
secPosition = secPosition - 135;
var divHeight = $(theID).height();
divHeight = divHeight + 90;
if (windowPos >= secPosition && windowPos < (secPosition + divHeight)) {
$("a[href='" + theID + "']").parent().addClass("active");
} else {
$("a[href='" + theID + "']").parent().removeClass("active");
}
}
I hope this saves others time, I've spent hours on figuring this out!

You could use one of several jQuery plugins which enables you to smoothly scroll to target element instead of measuring offset of target element and doing some calculations.
Try https://github.com/flesler/jquery.scrollTo

Flicker in nav bar styling when scrolling

I'm having a flickering issue with my bottom-border (nav link) when I scroll within a certain section. I suppose it's not really a flicker, but a transition that's being resetted every time I scroll within that section. For example (refer to source below), if my window is currently in a section and I scroll little by little, the border-bottom of my active nav link will flicker. In addition, if I hold onto the scroll bar and scroll down, the border-bottom disappears.
I'd like for it to:
1) Not flicker when scrolling.
2) When scrolling on the page with the scroll bar, keep the border-bottom present.
http://jsfiddle.net/binhxn89/zzmbex55/16/
HTML:
<body>
<div class="navbar">
<div class="container cf">
<ul>
<li>Home</li>
<li>Link1</li>
<li>link2</li>
<li>link3</li>
<li>link4</li>
</ul>
</div>
</div>
<section id="welcome" class="welcome"></section>
<section id="link1" class="link1"></section>
<section id="link2" class="link2"></section>
<section id="link3" class="link3"></section>
<section id="link4" class="link4"></section>
</body>
CSS:
body, html {
height: 100%;
color: #f3f3f3;
font-family: Arial, sans-serif;
}
body {
margin: 0;
overflow-x: hidden;
}
.container {
width: 90%;
margin: 0 auto;
}
.navbar {
background: rgba(0,0,0, 0.9);
width: 100%;
position: fixed;
z-index: 20;
}
.navbar ul li {
list-style: none;
float: left;
}
.navbar ul li a {
color: #fff;
display: block;
font-size: 14px;
margin: 0 10px;
padding: 20px 5px;
text-decoration: none;
-webkit-transition: all 0.2s ease-in-out;
-moz-transition: all 0.2s ease-in-out;
transition: all 0.2s ease-in-out;
}
.navbar ul li a:hover,
.navbar ul li a.active {
margin-top: -3px;
font-weight: bold;
padding-bottom: 8px;
border-bottom: 2px solid #fff;
}
section {
height:100%;
z-index: 10;
position: relative;
}
.welcome {
background: #ebebeb;
}
.link1 {
background: #aaa;
}
.link2 {
background: #bbb;
}
.link3 {
background: #ccc;
}
.link4 {
background: #ddd;
}
JS:
$(document).ready(function() {
$(window).scroll(function () {
var y = $(this).scrollTop();
$('.link').each(function (event) {
if (y >= $($(this).attr('href')).offset().top - 10) {
$('.link').not(this).removeClass('active');
$(this).addClass('active');
}
});
});
$('a[href*=#]:not([href=#])').click(function() {
if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') && location.hostname == this.hostname) {
var target = $(this.hash);
target = target.length ? target : $('[name=' + this.hash.slice(1) +']');
if (target.length) {
$('html,body').animate({
scrollTop: target.offset().top
}, 600);
return false;
}
}
});
})
If anyone could help or refer me to a particular source regarding this issue, that would be great. Thanks!

Please take a look here or take a look at the code below. First, I calculate the heigh of one element and get his position. After that I compare the part to the current position. So far, no flickering on Safari or Chrome, I hope this will fix it. It seams that your solution raised multiple events, if you look at the console.log(y); you will notice a lot of double values for part 2, 3, 4 and 5.
$(window).scroll(function() {
var y = $(this).scrollTop();
var sectionHeigth = $('section').height();
var part = Math.round((y / sectionHeigth));
$('.link').each(function(event) {
var position = $($(this).attr('href')).offset().top;
if ((part * sectionHeigth) != position) {
$(this).removeClass('active');
} else {
$(this).addClass('active');
}
});
});
Here is the update to your comment. I'll check if the current position is between the start and start + height position. That's all.
$(window).scroll(function() {
var y = $(this).scrollTop();
$('.link').each(function(event) {
var position = $($(this).attr('href')).offset().top;
var a = $($(this).attr('href')).height();
if (y >= position && y <= position + a) {
$(this).addClass('active');
} else {
$(this).removeClass('active');
}
});
});

How to hide/show nav bar when user scrolls up/down

Hide/show nav bar when user scrolls up/down
Here's the example I'm trying to achieve:
http://haraldurthorleifsson.com/
or
http://www.teehanlax.com/story/readability/
The navigation bar slides up off screen when you scroll down and slides back down on screen when you scroll up. I've figured out how to do it with fade in/fade out but I would like to achieve it with the exact same animation as in the example. Note: I already tried SlideIn() and like the way that it does the stretching animation...
JQUERY:
var previousScroll = 0,
headerOrgOffset = $('#header').offset().top;
$('#header-wrap').height($('#header').height());
$(window).scroll(function() {
var currentScroll = $(this).scrollTop();
console.log(currentScroll + " and " + previousScroll + " and " + headerOrgOffset);
if(currentScroll > headerOrgOffset) {
if (currentScroll > previousScroll) {
$('#header').fadeOut();
} else {
$('#header').fadeIn();
$('#header').addClass('fixed');
}
} else {
$('#header').removeClass('fixed');
}
previousScroll = currentScroll;
});
CSS:
#header {
width: 100%;
z-index: 100;
}
.fixed {
position: fixed;
top: 0;
}
#header-wrap {
position: relative;
}
HTML:
<div id="header-wrap">
<div id="header" class="clear">
<nav>
<h1>Prototype</h1>
</nav>
</div>
</div>

To get the inner content of the nav to slide up instead of being progressively hidden, you need to do the animation on the parent element, and keep the inner element at the bottom of the parent, like so:
jsfiddle
<div id="header-wrap">
<div id="header" class="clear">
<nav><h1>Prototype</h1>another line<br/>another line
</nav>
</div>
</div>
css
body {
height: 1000px;
}
#header {
width: 100%;
position: absolute;
bottom: 0;
}
#header-wrap {
width: 100%;
position: fixed;
background-color: #e0e0e0;
}
js
var previousScroll = 0,
headerOrgOffset = $('#header').height();
$('#header-wrap').height($('#header').height());
$(window).scroll(function () {
var currentScroll = $(this).scrollTop();
if (currentScroll > headerOrgOffset) {
if (currentScroll > previousScroll) {
$('#header-wrap').slideUp();
} else {
$('#header-wrap').slideDown();
}
} else {
$('#header-wrap').slideDown();
}
previousScroll = currentScroll;
});

Have you tried animate? but replace the -60px with the height of the navbar. But negative.
$(window).scroll(function() {
var currentScroll = $(this).scrollTop();
console.log(currentScroll + " and " + previousScroll + " and " + headerOrgOffset);
if(currentScroll > headerOrgOffset) {
if (currentScroll > previousScroll) {
$('#header').animate({
top: '-60px' //Change to Height of navbar
}, 250); //Mess with animate time
} else {
$('#header').animate({
top: '0px'
},250);
$('#header').addClass('fixed');
}
} else {
$('#header').removeClass('fixed');
}
previousScroll = currentScroll;
});

Whatever navbar element you use, it has to include a transition: transform 0.3s on it, and a base transform of 0.
#navbar {
position: fixed;
right: 0; left: 0; top: 0;
/* your height */
height: 40px;
/* .... */
-webkit-transform: translate3d(0,0,0);
-moz-transform: translate3d(0,0,0);
transform: translate3d(0,0,0);
-webkit-transition: -webkit-transform .3s;
-moz-transition: -moz-transform .3s;
-o-transition: transform .3s;
transition: transform .3s;
}
#navbar.scrolled {
/* subtract your height */
-webkit-transform: translate3d(0,-40px,0);
-moz-transform: translate3d(0,-40px,0);
transform: translate3d(0,-40px,0);
}
Then your javascript needs to watch the user's scrolling:
;(function (){
var previousScroll = 0;
var navbar = document.getElementById('navbar'),
navClasses = navbar.classList; // classList doesn't work <IE10
window.addEventListener('scroll', function(e){
var currentScroll = window.scrollY;
var isDown = currentScroll > previousScroll;
if ( isDown && !navClasses.contains('scrolled') ){
// scrolling down, didn't add class yet
navClasses.add('scrolled'); // we hide the navbar
} else if ( !isDown ){
// scrolling up
navClasses.remove('scrolled'); // won't error if no class found
}
// always update position
previousScroll = currentScroll;
});
}()); //run this anonymous function immediately

Try headroom js.
Also you can edit the CSS classes and deploy the transition effect.
http://wicky.nillia.ms/headroom.js

css
#media(min-width: 1079px){
#header{
width:100%;
height:82px;
border:1px solid grey;
background-color: lightgreen;
margin:0 auto;
position:fixed;
transition-property: all;
transition-duration: 0.3s;
transition-delay: 0s;
transition-timing-function: ease-out;
}
nav{
display: flex;
justify-content: space-between;
}
nav .nav1{
list-style-type: none;
padding: 0px;
}
nav a{
text-decoration: none;
color:grey;
padding: 13px;
display: block;
color: grey;
margin-top: 15px;
}
a{
text-decoration: none !important;
}
nav a:hover{
color: red;
}
nav .nav1{
display: flex;
justify-content: flex-end;
}
.row2{
background-color: skyblue;
height:2000px;
margin-top: 82px;
}
}
html
<!DOCTYPE html>
<html>
<head>
<title>header2</title>
<link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<link rel="stylesheet" href="css/header-larger1.css">
</head>
<body>
<!--<div id="header">-->
<nav>
<ul class="nav1" id="header">
<li>HOME</li>
<li>ABOUT</li>
<li>INFO</li>
<li>DISCOUNTS</li>
<li>BUSINESS</li>
<li>BLOG</li>
<li>CONTACT</li>
</ul>
</nav>
<!--</div>-->
<div class="container row2">
<h3>this is row2</h3>
</div>
</body>
<script src="http://code.jquery.com/jquery-1.11.3.min.js"></script>
<script type="text/javascript" src="js/head1.js"></script>
</html>
js
function fun1()
{
var documentElem=$(document),
lastScrollTop=0;
scrollabc=80;
documentElem.on('scroll',function()
{
var currentScrollTop=$(this).scrollTop();
console.log(window.pageYOffset);
if(currentScrollTop > scrollabc)
{
if(currentScrollTop>lastScrollTop)
{
//nav.addClass('hidden');
document.getElementById("header").style.marginTop = "-80px";
console.log("first if block");
}
else
{
// nav.removeClass('hidden');
document.getElementById("header").style.marginTop = "0px";
console.log("2nd if block");
}
}
lastScrollTop=currentScrollTop;
})
}
fun1();

I found a similar and simpler implementation of #Dom Day written about by Saijo George.
NOTE: I renamed Saijo's variables so it would be easier for me to read.
CSS
/* This class will be attached to your nav by the below */
.scrollUp {
transform: translateY(-100%);
}
jQuery
const navbar = document.querySelector("nav"); //Select your nav element here
let previousScroll = 0;
$(window).scroll(function handleNav() {
let currentScroll = $(window).scrollTop(); //Distance scrolled down the page
let navHeight = $(navbar).height(); //Height of navbar
//When scrolling down AND you've scrolled past navHeight * 2.25, add .scrollUp
if (currentScroll > previousScroll && currentScroll > navHeight * 2.25) {
$(navbar).addClass("scrollUp");
//When scrolling up AND you've scrolled less than navHeight, remove .scrollUp
} else if (previousScroll > currentScroll && !(currentScroll <= navHeight)) {
$(navbar).removeClass("scrollUp");
}
previousScroll = currentScroll;
});

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