I'm relatively new to coding a website and don't have much experience on stack overflow. For some reason it seems my navbar doesn't want to stick. I've searched around but can't find any obvious issues. Thanks for the help!
HTML
<script>
window.onscroll = function() {myFunction()};
var navbar = document.getElementById("navbar");
var sticky = navbar.offsetTop;
function myFunction() {
if (window.pageYOffset >= sticky) {
navbar.classList.add("sticky")
} else {
navbar.classList.remove("sticky");
}
}
</script>
</head>
<body>
<div class="navbar" id="navbar">
Contact
My Passions
About
<a class="active" href="index.html">Home</a>
</div>
CSS
.navbar {
overflow: hidden;
background-color: #333;
}
.navbar a{
float: right;
color: #f2f2f2;
text-align: center;
padding: 14px 16px;
text-decoration: none;
font-size: 17px;
}
.navbar a:hover {
background-color: #ddd;
color: black;
}
.navbar a.active {
background-color: #4CAF50;
color: white;
}
.content {
padding: 16px;
}
.sticky {
position: fixed;
top: 0;
width: 100%;
}
.sticky + .content {
padding-top: 60px;
}
If there is anything else you need from me to help just let me know.
You can solve this problem just leaving the class sticky in the navbar:
//just to occupy space
var cad='<br>';
for(i=0;i<1000;i++){
cad+="<p>Something</p>";
}
document.getElementById('content').textContent=cad;
.navbar {
overflow: hidden;
background-color: #333;
}
.navbar a{
float: right;
color: #f2f2f2;
text-align: center;
padding: 14px 16px;
text-decoration: none;
font-size: 17px;
}
.navbar a:hover {
background-color: #ddd;
color: black;
}
.navbar a.active {
background-color: #4CAF50;
color: white;
}
.content {
padding: 16px;
}
.sticky {
position: fixed;
top: 0;
width: 100%;
}
.sticky + .content {
padding-top: 60px;
}
<body>
<div class="navbar sticky" id="navbar">
Contact
My Passions
About
<a class="active" href="index.html">Home</a>
</div>
<div id="content">
Just add this code to your .navbar class:
.navbar{
position:fixed;
}
And remove the .sticky class. This would suffice your needs.
Or if you want to save your time but have good looking navigation then you can visit this link and have a look at the example:
Sticky Navigation Bar
Your code is working fine. I'm just create a code snippet using your above code, but i'm unable to fine any issue. When user scroll it's perfectly adding sticky class in navbar.
May be you facing any other issue. Feel free to share your concern. Thank you
window.onscroll = function() {myFunction()};
var navbar = document.getElementById("navbar");
var sticky = navbar.offsetTop;
function myFunction() {
if (window.pageYOffset >= sticky) {
navbar.classList.add("sticky")
} else {
navbar.classList.remove("sticky");
}
}
#wrapper {
height: 800px;
}
.navbar {
overflow: hidden;
background-color: #333;
}
.navbar a{
float: right;
color: #f2f2f2;
text-align: center;
padding: 14px 16px;
text-decoration: none;
font-size: 17px;
}
.navbar a:hover {
background-color: #ddd;
color: black;
}
.navbar a.active {
background-color: #4CAF50;
color: white;
}
.content {
padding: 16px;
}
.sticky {
position: fixed;
top: 0;
width: 100%;
}
.sticky + .content {
padding-top: 60px;
}
<div id="wrapper">
<div class="navbar" id="navbar">
Contact
My Passions
About
<a class="active" href="index.html">Home</a>
</div>
</div>
As jmargolisvt said: make sure you have enough text under the navbar so you can scroll the page.
I have tried your code and it worked when I added a sufficient amount of text to the body.
Bonus hint: if you're using Visual Studio Code you can use "lorem*30" followed by the Tab key to add dummy text.
Related
I am trying to add active classes on on my navigation menu so there is a border and the writting is coloured for the specific page your on but it isn't working. It worked for the primary navigation but wont work for my secondary one any ideas as to why its not working would be appreciated thank you? my code is down below. the active class at the bottom is what should be applied
const currentLocations = location.href;
const menuItems = document.querySelectorAll('.secondary a');
const menuLengths = menuItems.length
for (let i = 0; i < menuLengths; i++) {
if (menuItems[i].href === currentLocations) {
menuItems[i].className = "active"
}
}
.secondarynav-item-trading {
position: relative;
margin-top: 10px;
padding: 15px 5px;
width: 1430px;
top: 13px;
left: 30px;
}
.secondarynav-item-trading a {
display: inline-block;
text-decoration: none;
color: black;
font-size: 14px;
text-align: center;
padding: 10px;
border-radius: 20px;
width: 190px;
}
.secondarynavigation-item-trading ul {
list-style: none;
}
.secondarynavigation-item-trading li {
display: inline-block;
margin-top: 0;
}
.secondarynavigation-item-trading a:hover {
color: #fd886b;
border: 1px solid #fd886b;
font-weight: bold;
}
.secondarynavigation-item-trading a:hover::before {
width: 100%;
}
.secondarynav-item-trading ::after {
content: "";
display: table;
clear: both;
}
.secondarynavigation-item-trading a::before {
content: "";
display: block;
height: 5px;
background-color: #fd886b;
position: relative;
top: 40px;
width: 0%;
transition: all ease-in-out 250ms;
}
.secondary a.active {
color: #fd886b;
border: 1px solid #fd886b;
font-weight: bold;
}
<header class="secondarynav-messages">
<div class="secondary">
<!-- secondary navigation for homepage -->
<nav alt="secondarynavigation-messages" id="secondarynavigation-messages">
<!-- secondary navigation buttons below the main navigation -->
<ul class="secondarynavigation-messages" id="secondarynavigation-messages">
<li>Inbox</li>
<li>Sent</li>
<li>Compose a message</li>
<li>Drafts</li>
<li>Archived</li>
</ul>
</nav>
</div>
</header>
the way I have it in the code above is working for the first page but none of the others but I have done the exact same thing in the primary nav and it worked i also copied the code on a new website document and it worked but for some reason its not working here
I have a fixed header menu bar at the top of the webpage. Each of the titles is a link but I want a dropdown for the first link. The link components for the dropdown menu is behaving strangely, see image:
I would like the link components to be stacked on top of each other, like a proper dropdown. Below is my code:
It looks correct when I run the code snippet but when I did these codings in Visual Studio, the codings below looks just like the image.
// When the user scrolls the page, execute myFunction
window.onscroll = function () { myFunction() };
// Get the navbar
var navbar = document.getElementById("navbar");
// Get the offset position of the navbar
var sticky = navbar.offsetTop;
// Add the sticky class to the navbar when you reach its scroll position. Remove "sticky" when you leave the scroll position
function myFunction() {
if (window.pageYOffset >= sticky) {
navbar.classList.add("sticky")
} else {
navbar.classList.remove("sticky");
}
}
.navbar {
overflow: hidden;
background-color: #333;
position: fixed;
top: 0;
width: 100%;
opacity: 1;
}
.navbar a {
float: left;
display: block;
color: #f2f2f2;
text-align: center;
padding: 14px 16px;
text-decoration: none;
font-size: 17px;
}
.navbar a:hover {
background: #ddd;
color: black;
}
/* The dropdown container */
.dropdown {
float: left;
overflow: hidden;
}
/* List for header */
.navlist {
list-style-type: none;
margin: 0;
padding: 0;
background-color: black;
}
.navlist li {
float: left;
}
.navlist a{
display:block;
padding:8px;
transition:0.3s;
}
.navlist a:hover{
background-color:rgba(255,255,255,0.3);
}
.navlist a[href="#Quiclinks"] {
background-color: #fff;
color: #000;
}
.navlist>li{
position:relative;
}
<div id="navbar">
<div class="dropdown">
<ul class="navlist">
<li>
Quicklinks<i class="fa fa-angle-double-down"></i>
<div>
All Documents
Divisional Websites
About
</div>
</li>
<li>Intro & News </li>
<li>Programmes</li>
<li>Benefits</li>
<li>Location</li>
</ul>
</div>
</div>
<div id="navbar">
<div class="dropdown">
<ul class="navlist">
<li>
<div className="linkWrapper">
Quicklinks<i class="fa fa-angle-double-down"></i>
</div>
<div>
All Documents
Divisional Websites
About
</div>
</li>
<li>Intro & News </li>
<li>Programmes</li>
<li>Benefits</li>
<li>Location</li>
</ul>
</div>
</div>
// When the user scrolls the page, execute myFunction
window.onscroll = function () { myFunction() };
// Get the navbar
var navbar = document.getElementById("navbar");
// Get the offset position of the navbar
var sticky = navbar.offsetTop;
// Add the sticky class to the navbar when you reach its scroll position. Remove "sticky" when you leave the scroll position
function myFunction() {
if (window.pageYOffset >= sticky) {
navbar.classList.add("sticky")
} else {
navbar.classList.remove("sticky");
}
}
.navbar {
overflow: hidden;
background-color: #333;
position: fixed;
top: 0;
width: 100%;
opacity: 1;
}
.navbar a {
float: left;
display: block;
color: #f2f2f2;
text-align: center;
padding: 14px 16px;
text-decoration: none;
font-size: 17px;
}
.navbar a:hover {
background: #ddd;
color: black;
}
/* The dropdown container */
.dropdown {
float: left;
overflow: hidden;
}
/* List for header */
.navlist {
list-style-type: none;
margin: 0;
padding: 0;
background-color: black;
}
.navlist li {
float: left;
}
.navlist a{
display:block;
padding:8px;
transition:0.3s;
}
.linkWrapper a:first-child {
display:block;
}
.navlist a:hover{
background-color:rgba(255,255,255,0.3);
}
.navlist a[href="#Quiclinks"] {
background-color: #fff;
color: #000;
}
.navlist>li{
position:relative;
}
remove the float for the submenu items adding
.navlist li div a {
float: none;
}
// When the user scrolls the page, execute myFunction
window.onscroll = function () { myFunction() };
// Get the navbar
var navbar = document.getElementById("navbar");
// Get the offset position of the navbar
var sticky = navbar.offsetTop;
// Add the sticky class to the navbar when you reach its scroll position. Remove "sticky" when you leave the scroll position
function myFunction() {
if (window.pageYOffset >= sticky) {
navbar.classList.add("sticky")
} else {
navbar.classList.remove("sticky");
}
}
.navbar {
overflow: hidden;
background-color: #333;
position: fixed;
top: 0;
width: 100%;
opacity: 1;
}
.navbar a {
float: left;
display: block;
color: #f2f2f2;
text-align: center;
padding: 14px 16px;
text-decoration: none;
font-size: 17px;
}
.navbar a:hover {
background: #ddd;
color: black;
}
/* The dropdown container */
.dropdown {
float: left;
overflow: hidden;
}
/* List for header */
.navlist {
list-style-type: none;
margin: 0;
padding: 0;
background-color: black;
}
.navlist li {
float: left;
}
.navlist li div a {
float: none;
}
.navlist a{
display:block;
padding:8px;
transition:0.3s;
}
.navlist a:hover{
background-color:rgba(255,255,255,0.3);
}
.navlist a[href="#Quiclinks"] {
background-color: #fff;
color: #000;
}
.navlist>li{
position:relative;
}
<div id="navbar">
<div class="dropdown">
<ul class="navlist">
<li>
Quicklinks<i class="fa fa-angle-double-down"></i>
<div>
All Documents
Divisional Websites
About
</div>
</li>
<li>Intro & News </li>
<li>Programmes</li>
<li>Benefits</li>
<li>Location</li>
</ul>
</div>
</div>
UPDATE
Your code snippet already set links to display: block and it works as expected, your issue seems to come from somewhere else, maybe css overrides elsewhere in your project ?
.navlist a{
display:block;
padding:8px;
transition:0.3s;
}
ORIGINAL ANSWER
You're using a tags which by default are displayed inline, you could add some styling to your a to display: block or use a list :
Quicklinks<i class="fa fa-angle-double-down"></i>
<ul>
<li>All Documents</li>
<li>Divisional Websites</li>
<li>About</li>
</ul>
You may want to make this list unstyled to avoid dots.
Also to behave like a proper dropdown, this list should be hidden on first render and you will trigger the visibility with another js function listening on click event on your "Quicklinks" link. Something like :
var button = document.getElementById("dropdownButton");
var menu = document.getElementById("dropdownMenu");
button.addEventListener("click", function(e) {
menu.classList.toggle("hidden");
});
.hidden {
display: none;
}
Quicklinks
<ul id="dropdownMenu" class="hidden">
<li>All Documents</li>
<li>Divisional Websites</li>
<li>About</li>
</ul>
this is because your css have :
.navlist li {
float: left;
}
just remove it and add to .navlist a
clear: both;
}
complete code :
.navbar {
overflow: hidden;
background-color: #333;
position: fixed;
top: 0;
width: 100%;
opacity: 1;
}
.navbar a {
float: left;
display: block;
color: #f2f2f2;
text-align: center;
padding: 14px 16px;
text-decoration: none;
font-size: 17px;
}
.navbar a:hover {
background: #ddd;
color: black;
}
/* The dropdown container */
.dropdown {
float: left;
overflow: hidden;
}
/* List for header */
.navlist {
list-style-type: none;
margin: 0;
padding: 0;
background-color: black;
}
/* just example */
.navlist div {
margin-left: 1em;
}
.navlist a{
display:block;
padding:8px;
transition:0.3s;
/* adding : ( work with -- float: left -- allready present in -- .navbar a -- */
clear: both;
}
.navlist a:hover{
background-color:rgba(255,255,255,0.3);
}
.navlist a[href="#Quiclinks"] {
background-color: #fff;
color: #000;
}
.navlist>li{
position:relative;
}
<link rel="stylesheet"
href="https://use.fontawesome.com/releases/v5.8.1/css/all.css"
integrity="sha384-50oBUHEmvpQ+1lW4y57PTFmhCaXp0ML5d60M1M7uH2+nqUivzIebhndOJK28anvf"
crossorigin="anonymous">
<div id="navbar">
<div class="dropdown">
<ul class="navlist">
<li>
Quicklinks <i class="fa fa-angle-double-down"></i>
<div>
All Documents
Divisional Websites
About
</div>
</li>
<li>Intro & News </li>
<li>Programmes</li>
<li>Benefits</li>
<li>Location</li>
</ul>
</div>
</div>
I am having a problem with an absolute element. This element is the floating-count which is on the top of the navigation.
Problem is when I hover my mouse on floating-count element, the drop-down arrow also is hovering (it should suppose to hover or change color when the navigation hovers). Then when I am clicking the floating-count element the drop-down navigation also showing (it should suppose to show when the navigation was clicked).
I tried changing (playing with it as I expect to see the solution) and adding z-index to the elements but I am confused with it.
Code here:
$('.mnav').on('click', function() {
if ($(this).children('.dpdown').is(":hidden")) {
console.log('show');
$(this).children('.dpdown').slideDown("fast");
} else {
$(this).children('.dpdown').slideUp("fast");
console.log('hide');
}
});
li.mnav,
.navigation ul.right li.mnav {
display: inline-block;
position: relative;
}
a.text-link,
.navigation ul.right li.mnav a.text-link {
color: #fff;
font-size: 15px;
line-height: 15px;
padding: 14px 24px;
display: block;
text-decoration: none;
text-transform: uppercase;
}
.nav-arrow {
background: yellow;
}
.nav-arrow:after {
top: 40%;
right: 0;
border: solid transparent;
content: " ";
height: 0;
width: 0;
position: absolute;
pointer-events: none;
border-top-color: #1b6b00;
border-width: 8px;
}
.floating-count {
position: absolute;
z-index: 1;
border-radius: 20px;
background: red;
padding: 4px 8px;
top: -12px;
right: -2px;
text-decoration: none;
color: #FFF;
}
.dpdown {
position: absolute;
left: 0;
top: 50px;
width: 300px;
display: none;
z-index: 1;
}
.dpdown ul li a {
font-size: 12px;
color: #eaf2ac;
padding: 5px 30px;
display: block;
text-decoration: none;
text-transform: uppercase;
}
.dpdown ul {
list-style-type: none;
background-color: #1b6b00;
text-align: left;
margin: 0;
padding: 4px 0;
}
ul.right {
list-style-type: none;
background-color: #208100;
text-align: center;
margin: 0;
padding: 0;
float: left;
border-radius: 5px;
}
ul.right li.mnav:hover,
.navigation ul.right li.mnav a.text-link:hover {
color: #ffea00;
}
.dpdown:hover>.nav-arrow:after {
color: #ffea00;
}
.navigation .mnav:hover>.nav-arrow:after {
border-top-color: #ffea00;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="navigation">
<ul class="right">
<li class="mnav">
Drop Down<span class="nav-arrow"></span>
<span class="floating-count-wrap"><a class="floating-count" href="/#count">2</a></span>
<div class="dpdown">
<ul>
<li>A</li>
<li>B</li>
<li>C</li>
<li>D</li>
</ul>
</div>
</li>
</ul>
</div>
Try it in jsfiddle:
You have the hover style based on .mnav and the js dropdown triggered by .mnav but .floating-count-wrap is a child of .mnav so it is triggering those events.
I adjusted the css and js to use .mnav .test-link as the selector. I also had to make the css rule use sibling and not parent selection. Similarily, in the js, the selector for the dropdown is no longer a child of $(this) so I updated that to $(this).parent()
updated js fiddle
js
$('.mnav .text-link').on('click', function() { ... });
css
.navigation .mnav .text-link:hover + .nav-arrow:after { ... }
My goal is for my hamburger menu to close when an item is clicked inside of it. As of right now, the menu only uses html and css.
The difference between this nav bar and others is that mine is created from a input checkbox html element, what i need is for my checkbox to uncheck when a link is clicked inside of the hamburger. This should close the entire menu just like it would if i clicked on the hamburger. Also, could you explain what and why the javascript does what it does, i don't have much experience with javascript, thanks. :)
I also made the checkbox visible just so that we can have a better understanding of whats going on.
My CSS:
/* navigation menu */
.nav {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 70px;
line-height: 70px;
text-align: right;
z-index: 10000;
background-color: #ffffff;
border-bottom: 1px solid #eaeaeb;
}
.menu {
margin: 0 30px 0 0;
}
/* link items */
.menu a {
clear: right;
line-height: 70px;
text-decoration: none;
margin: 0 10px;
text-align: center;
color: #33334d;
background-color: #ffffff;
}
.menu a:hover {
background-color: #c2c2d6;
}
/* hamburger properties */
label {
float: right;
display: none;
width: 26px;
line-height: 70px;
margin: 0 40px 0 0;
font-size: 36px;
}
/* checkbox */
#toggle {
}
#media only screen and (max-width: 1075px) {
/* hamburger properties */
label {
display: block;
cursor: pointer;
}
/* nav menu properties */
.menu {
width: 100%;
display: none;
text-align: center;
}
/* link items */
.menu a {
display: block;
margin: 0px;
border-bottom: 1px solid #eaeaeb;
}
/* makes links show when checkbox is checked */
#toggle:checked + .menu {
display: block;
}
}
My HTML:
<div class="nav">
<label for="toggle">☰</label>
<input type="checkbox" id="toggle"/>
<div class="menu">
example
example
example
example
example
example
example
</div>
</div>
Javscript may not actually be required, depending on your needs.
If you give the div containing your nav links an ID you can target this with an a tag setting the href to the ID. Then you can use the :target selector to change the visibility of our navigation div.
/* navigation menu */
.nav {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 70px;
line-height: 70px;
text-align: right;
z-index: 10000;
background-color: #ffffff;
border-bottom: 1px solid #eaeaeb;
}
.menu {
margin: 0 30px 0 0;
}
/* link items */
.menu a {
clear: right;
line-height: 70px;
text-decoration: none;
margin: 0 10px;
text-align: center;
color: #33334d;
background-color: #ffffff;
}
.toggle {
text-decoration: none;
color: #33334d;
}
.menu a:hover {
background-color: #c2c2d6;
}
/* hamburger properties */
.toggle,
label {
float: right;
display: none;
width: 26px;
line-height: 70px;
margin: 0 40px 0 0;
font-size: 36px;
}
/* checkbox */
#toggle {}
#media only screen and (max-width: 1075px) {
/* hamburger properties */
.toggle,
label {
display: block;
cursor: pointer;
}
/* nav menu properties */
.menu {
width: 100%;
display: none;
text-align: center;
}
/* link items */
.menu a {
display: block;
margin: 0px;
border-bottom: 1px solid #eaeaeb;
}
/* makes links show when checkbox is checked */
#menu:target,
#toggle:checked+.menu {
display: block;
}
}
<div class="nav">
<a class="toggle" href="#menu">☰</a>
<div class="menu" id="menu">
example
example
example
example
example
example
example
</div>
</div>
Wow, interesting. It's a pretty weird practise, what you have, but it could work. You can make menu show/hide by input checked. Very interesting. I have never think of like that.
But also you will need a piece of JS code.
By CSS you can handle some basic selector like :hover, :focus, :active etc. In our your case you also make some interesting click event. But checkbox is not for that purpose.
Click and other event are handled by JS (more https://www.w3schools.com/js/js_events.asp).
So in our case, we select all links:
var links = document.querySelectorAll('.menu a');
then we have to add click event to every link, which will set our input to checked="false" = close menu.
This JS code will only work, when selected links are rendered, so you need to put this piece of code to the end of your html file before </body> or use window.onload...
var links = document.querySelectorAll('.menu a');
var linksLength = links.length
for(var i = 0; i < linksLength; i++) {
links[i].addEventListener('click', function() {
document.getElementById('toggle').checked = false;
});
}
/* navigation menu */
.nav {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 70px;
line-height: 70px;
text-align: right;
z-index: 10000;
background-color: #ffffff;
border-bottom: 1px solid #eaeaeb;
}
.menu {
margin: 0 30px 0 0;
}
/* link items */
.menu a {
clear: right;
line-height: 70px;
text-decoration: none;
margin: 0 10px;
text-align: center;
color: #33334d;
background-color: #ffffff;
}
.menu a:hover {
background-color: #c2c2d6;
}
/* hamburger properties */
label {
float: right;
display: none;
width: 26px;
line-height: 70px;
margin: 0 40px 0 0;
font-size: 36px;
}
/* checkbox */
#toggle {
}
#media only screen and (max-width: 1075px) {
/* hamburger properties */
label {
display: block;
cursor: pointer;
}
/* nav menu properties */
.menu {
width: 100%;
display: none;
text-align: center;
}
/* link items */
.menu a {
display: block;
margin: 0px;
border-bottom: 1px solid #eaeaeb;
}
/* makes links show when checkbox is checked */
#toggle {
display: none;
}
#toggle:checked + .menu {
display: block;
}
}
<label class="nav" for="toggle">
<div class="icon">☰</div>
<input type="checkbox" id="toggle"/>
<div class="menu">
example
example
example
example
example
example
example
</div>
</label>
So i wanted to make this simple navigation go from background transparent to background bright green gradually. I got the idea of using the $(window).scrollTop() jQuery function to get the distance from top and divide it by 10 to get a smooth transition, but it still feels kinda snappy when i run it in chrome and firefox.
Is there another (smoother and more modern) way of doing this?
I really wanted to make the design very simple to induce the flat design art and give the website a lot of functionality to give it a modern vibe of simple but practical.
FYI:
i dont want dropdowns, expansions etc. so dont suggest them.
Also dont judge the color.
The activator link is for mobile(where i have a dropdown). so dont be bothered to mind it.
Markup:
<nav>
<a id="activator"></a>
<ul>
<li>Home</li>
<li>Courses</li>
<li>Contact</li>
<li>Log out</li>
</ul>
</nav>
Style:
<style>
nav{
position: fixed;
width: 100%;
z-index: 2;
height: 2em;
}
nav ul{
overflow: hidden;
background: #1adc8c;
height: auto;
}
nav ul li{
float: none;
text-align: center;
width: 100%;
margin: 0%;
padding: 0px;
font-weight: bold;
font-size: 1.1em;
}
nav ul li a{
display: block;
color: #FFF;
text-decoration: none;
font-family: sans-serif;
font-size: 1.2em;
padding: 20px;
}
</style>
JQ and JS:
if(window.innerWidth > 400){
$(window).scroll(function(){
var fromTop = $(this).scrollTop();
if(fromTop >= 100){
$("nav").css({
"background" : "rgba(26, 220, 140,0." + fromTop/10 + ")"
});
if(fromTop >= 600){
$("nav").css({
"background" : "rgba(26,220,140,1)"
});
}
}else{
$("nav").css({
"background" : ""
});
}
});
}
Try adding the
transition: all 200ms;
will-change: background;
properties to you nav class to make it look smooth. you can see these examples on codepen 1 , 2, 3
if (window.innerWidth > 400) {
$(window).scroll(function() {
var fromTop = $(this).scrollTop();
if (fromTop >= 100) {
$("nav").css({
"background": "rgba(26, 220, 140,0." + fromTop / 10 + ")"
});
if (fromTop >= 600) {
$("nav").css({
"background": "rgba(26,220,140,1)"
});
}
} else {
$("nav").css({
"background": ""
});
}
});
}
.long-div {
height: 500vh;
}
nav {
position: fixed;
width: 100%;
z-index: 2;
height: 4em;
transition: all 500ms;
will-change: background;
}
nav ul {
overflow: hidden;
width: 100%;
height: auto;
list-style-type: none;
}
nav ul li {
float: left;
text-align: center;
margin: 0%;
padding: 0px;
font-weight: bold;
font-size: 1.1em;
}
nav ul li a {
display: block;
color: #000;
text-decoration: none;
font-family: sans-serif;
font-size: 1.2em;
padding: 5px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<nav>
<a id="activator"></a>
<ul>
<li>
Home
</li>
<li>
Courses
</li>
<li>
Contact
</li>
<li>
Log out
</li>
</ul>
</nav>
<div class="long-div">
</div>
You'd probably be better off simply toggling a CSS-class (e.g. .alternative), depending on how far you've scrolled. This, in conjunction with a CSS transition would allow you to make a smooth, well, transition.
Please see the following code snippet for a working example of this.
$(window).scroll(function() {
var fromTop = $(this).scrollTop()
if (fromTop >= 100) {
$('nav').addClass('alternative')
} else {
$('nav').removeClass('alternative')
}
})
nav {
position: fixed;
width: 100%;
z-index: 2;
height: 2em;
background-color: transparent;
transition: background-color 0.5s;
}
nav.alternative {
background-color: #1adc8c;
}
nav ul {
overflow: hidden;
background: #1adc8c;
height: auto;
}
nav ul li {
float: none;
text-align: center;
width: 100%;
margin: 0%;
padding: 0px;
font-weight: bold;
font-size: 1.1em;
}
nav ul li a {
display: block;
color: #FFF;
text-decoration: none;
font-family: sans-serif;
font-size: 1.2em;
padding: 20px;
}
.spacer {
min-height: 500px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<nav>
<a id="activator"></a>
<ul>
<li>Home</li>
<li>Courses</li>
<li>Contact</li>
<li>Log out</li>
</ul>
</nav>
<div class="spacer"></div>