I'm looking to make a left to right scrolling navigation menu that's items are highlighted as you scroll down the page. This navigation will look similarly to the following in page navigation on Chase.com (https://www.chase.com/digital/customer-service?jp_cmp=rb/tap/off/na/prt). Please note that I want this navigation to stay scrollable on all devices.
Below is what I have so far. I'm currently having the issue with getting the nav options to scroll into focus as they are highlighted.
window.onscroll = function() {
myFunction()
};
var navbar = document.getElementById("inpagenav");
var sticky = inpagenav.offsetTop;
function myFunction() {
if (window.pageYOffset >= sticky) {
inpagenav.classList.add("sticky")
} else {
inpagenav.classList.remove("sticky");
}
}
// cache the navigation links
var $navigationLinks = $('#inpagenav > ul > li > a');
// cache (in reversed order) the sections
var $sections = $($(".pagenavsection").get().reverse());
// map each section id to their corresponding navigation link
var sectionIdTonavigationLink = {};
$sections.each(function() {
var id = $(this).attr('id');
sectionIdTonavigationLink[id] = $('#inpagenav > ul > li > a[href=\\#' + id + ']');
});
// throttle function, enforces a minimum time interval
function throttle(fn, interval) {
var lastCall, timeoutId;
return function() {
var now = new Date().getTime();
if (lastCall && now < (lastCall + interval)) {
// if we are inside the interval we wait
clearTimeout(timeoutId);
timeoutId = setTimeout(function() {
lastCall = now;
fn.call();
}, interval - (now - lastCall));
} else {
// otherwise, we directly call the function
lastCall = now;
fn.call();
}
};
}
function highlightNavigation() {
// get the current vertical position of the scroll bar
var myPadding = $('#inpagenav').height();
var scrollPosition = $(window).scrollTop();
// iterate the sections
$sections.each(function() {
var currentSection = $(this);
// get the position of the section
var sectionTop = currentSection.offset().top;
// if the user has scrolled over the top of the section
if (scrollPosition + myPadding >= sectionTop) {
// get the section id
var id = currentSection.attr('id');
// get the corresponding navigation link
var $navigationLink = sectionIdTonavigationLink[id];
// if the link is not active
if (!$navigationLink.hasClass('active')) {
// remove .active class from all the links
$navigationLinks.removeClass('active');
// add .active class to the current link
$navigationLink.addClass('active');
}
// we have found our section, so we return false to exit the each loop
return false;
}
});
}
$(window).scroll(throttle(highlightNavigation, 100));
// if you don't want to throttle the function use this instead:
// $(window).scroll( highlightNavigation );.mainimage {
text-align: center;
height: 300px;
background: gray
}
nav {
background: white;
}
.sticky {
position: fixed;
top: 0;
width: 100%;
}
nav ul {
list-style: none;
padding: 0rem;
overflow: auto;
white-space: nowrap;
margin: 0rem;
overflow-x: scroll;
}
nav ul::-webkit-scrollbar-thumb {
background: #000;
}
nav ul li {
padding-top: 1rem;
vertical-align: center;
display: inline-block;
}
nav ul li a {
text-decoration: none;
color: dodgerblue;
display: inline-block;
margin: 0rem 2rem;
padding-bottom: 1rem;
border-bottom: 3px solid transparent;
}
nav ul li a:hover {
color: #0054a4;
border-bottom: 3px solid #0054a4;
}
nav ul li .active {
color: #308ce3;
font-weight: bold;
border-bottom: 3px solid #308ce3;
}
#section1 {
text-align: center;
height: 500px;
padding: 4rem 0rem;
background: orange;
}
#section2 {
text-align: center;
height: 200px;
padding: 4rem 0rem;
background: green;
}
#section3 {
text-align: center;
height: 300px;
padding: 4rem 0rem;
background: blue;
}
#section4 {
text-align: center;
height: 500px;
padding: 4rem 0rem;
background: red;
}
#section5 {
text-align: center;
height: 500px;
padding: 4rem 0rem;
background: pink;
}
#section6 {
text-align: center;
height: 500px;
padding: 7rem 0rem;
background: purple;
}
#section7 {
text-align: center;
height: 500px;
padding: 7rem 0rem;
background: purple;
}<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!DOCTYPE html>
<html>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="menu.css">
<body>
<div id="contentwrapper">
<div class="mainimage">
<h1>The whole world</h1>
</div>
<nav id="inpagenav">
<ul>
<li><a href="#section1" class="section1">Section 1</a></li>
<li><a href="#section2" class="section2">Section 2</a></li>
<li><a href="#section3" class="section3">Section 3</a></li>
<li><a href="#section4" class="section4">Section 4</a></li>
<li><a href="#section5" class="section5">Section 5</a></li>
<li><a href="#section6" class="section6">Section 6</a></li>
</ul>
</nav>
<section id="section1" class="pagenavsection">
I'm section 1
</section>
<section id="section2" class="pagenavsection">
I'm section 2
</section>
<section id="section3" class="pagenavsection">
I'm section 3
</section>
<section id="section4" class="pagenavsection">
I'm section 4
</section>
<section id="section5" class="pagenavsection">
I'm section 5
</section>
<section id="section6" class="pagenavsection">
I'm section 6
</section>
<section id="section7">lo</section>
</div>
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<script src="ScrollMenu.js"></script>
</body>
</html>
