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How to style & toggle notifications list?

I made a nav bar using nav and li tags, including a notifications icon, I am trying to make notifications nested list to show notifications, and use JavaScript to toggle/hide the menu, so far no luck. I've been looking for snippets online to support my logic, but I am stuck in the styling part and the JavaScript functionality. code below:
/* When the user clicks on the button,
toggle between hiding and showing the dropdown content */
function myFunction() {
document.getElementById("myDropdown").classList.toggle("show");
}
// Close the dropdown if the user clicks outside of it
window.onclick = function(e) {
if (!e.target.matches('.dropbtn')) {
var myDropdown = document.getElementById("myDropdown");
if (myDropdown.classList.contains('show')) {
myDropdown.classList.remove('show');
}
}
}
html {
scroll-behavior: smooth;
}
* {
font-family: 'Roboto', sans-serif;
font-style: normal;
padding: 0;
margin: 0;
text-decoration: none;
}
.container {
display: flex;
flex-direction: column;
min-height: 100vh;
}
main {
flex: 1;
}
::-webkit-scrollbar {
width: 1.32vmin;
}
/*
::-webkit-scrollbar-track{
border: 0.53vmin solid rgba(7, 67, 146, 0.17);
box-shadow: inset 0 0 0.33vmin 0.26vmin rgba(7, 67, 146, 0.17);
}
*/
::-webkit-scrollbar-thumb {
background: #074392;
border-radius: 0vmin;
}
::-webkit-scrollbar-button {
height: 7.45vmin;
background: #074392;
}
body {
font-weight: 400;
font-size: 2.12vmin;
background-color: #FFFFFF;
/*overflow: hidden;*/
height: 100%;
}
h1 {
margin-left: 3vmin;
}
h5 {
margin: 2vmin 3vmin;
position: absolute;
width: 14.72vmin;
font-weight: 500;
font-size: 2.65vmin;
letter-spacing: 0.79vmin;
color: #FFFFFF;
display: inline;
}
nav {
background-color: #074392;
height: 7.42vmin;
width: 100%;
/*position: relative;*/
/*overflow: hidden;*/
position: sticky;
top: 0;
}
img.logo {
margin: 1.855vmin 3vmin;
height: 3.5vmin;
width: 7vmin;
}
nav ul {
float: right;
margin: 1.855vmin 2vmin;
}
nav ul li {
display: inline-block;
}
nav ul li::before {
content: " ";
padding: 0vmin 0.5vmin;
}
nav ul li a {
color: white;
/*margin: 0vmin 1vmin;*/
/*border-top-left-radius: 1.326vmin;
border-top-right-radius: 1.326vmin;
border-bottom-left-radius: 1.326vmin;
border-bottom-right-radius: 1.326vmin;*/
}
a.active,
a:hover {
font-variation-settings: 'FILL' 1;
}
.checkbtn {
color: #ffffff;
float: left;
cursor: pointer;
display: none;
margin: 1.855vmin 3vmin;
}
#check {
display: none;
}
#check:checked~ul {
left: 0;
}
.dropdown {}
.dropdown .dropbtn {
cursor: pointer;
border: none;
outline: none;
background-color: #074392;
color: #FFFFFF;
}
.dropdown:hover .dropbtn,
.dropbtn:focus {
color: #FFFFFF;
font-variation-settings: 'FILL' 1;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #0743922B;
width: 37.5vmin;
overflow-wrap: break-word;
transform: translateX(-56%);
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
z-index: 1;
}
.dropdown-content a {
float: none;
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
text-align: justify;
}
.dropdown-content a:hover {
background-color: #0743922B;
}
.show {
display: block;
}
<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Material+Symbols+Rounded:opsz,wght,FILL,GRAD#20..48,100..700,0..1,-50..200" />
<div class="container">
<nav>
<input type="checkbox" id="check">
<label for="check" class="checkbtn">
<i class="material-symbols-rounded" style="font-size:3.5vmin;" title="Menu">menu</i>
</label>
<h5>LOGO</h5>
<ul>
<li>
<i class="material-symbols-rounded" style="font-size:3.5vmin;" title="Home">home</i>
</li>
<!-- <li> <i class="material-symbols-rounded" style="font-size:3.5vmin;" title="Notifications">notifications</i> -->
<li class="dropdown"><button class="dropbtn" onclick="myFunction()"><i class="material-symbols-rounded" style="font-size:3.5vmin;" title="Notifications">notifications</i></button>
<div class="dropdown-content" id="myDropdown">
<div>Link 1</div>
<div>Link 2</div>
<div>Link asasdasdasdasdasdsadsadasdasdasdasd asddasdas asd asd asd dasd asd</div>
</div>
</li>
<li>
<i class="material-symbols-rounded" style="font-size:3.5vmin;" title="Tasks">task</i>
</li>
<li>
<i class="material-symbols-rounded" style="font-size:3.5vmin;" title="Profile">person</i>
</li>
</ul>
<script type="text/javascript" src="JS/ActiveTab.js"></script>
<script type="text/javascript" src="JS/ToggleNotifications.js"></script>
</nav>
<main>
<h1>Example Page</h1>
</main>
</div>

By default set a display: none on the dropdown element and set a display: block on the hover pseudo-class of the dropdown element so when a hover event is triggered the dropdown appears.
Also, you can use classList.toggle method to remove if exists or to add if not exist the class.
Remove
Just add the following to the .css:
#myDropdown {
display: none;
}
#myDropdown.show {
display: block;
}
Remove onclick="myFunction()". And replace the .js with:
const myDropdown = document.getElementById('myDropdown')
addEventListener('click', event => {
let dropbtn = event.target.closest('button.dropbtn')
if (!dropbtn) return myDropdown.classList.remove('show')
console.log('hii')
myDropdown.classList.toggle('show')
})

Keep nav menu open if child item is active in a vertical list

I am working on Vertical list and list shows child item when user clicks on the parent item and also changes the color of the child item in red if it matches the URL.
I want the parent nav in open state if it's child item has an active-menu class.
I am using below script but it's not working, not sure what I am missing
Fiddle code
$(".nav-w > ul > li > a").click(function() {
$(this).next().slideToggle();
});
//open active list
$('.nav-w ul li').children().has('.active-menu').css('display', 'block');
// compare url with nav url to show active url
$(function() {
//var url = window.location.href;
var url = window.location.pathname;
var pgurl = window.location.href.substr(
window.location.href.lastIndexOf("/") + 1
);
$(".nav-w ul li a").each(function() {
if ($(this).attr("href") == url || $(this).attr("href") == "") {
$(this).addClass("active-menu");
}
});
console.log("url : " + window.location.pathname);
});
.nav-w a {
color: black;
padding: 10px 15px;
padding-left: 35px;
text-decoration: none;
display: block;
border-bottom: 1px solid #f1f1f1;
font-size: 12px;
font-weight: 600;
/* color: #178B43 !important; */
color: #757575;
}
/* ul inside content area*/
.nav-w ul {
margin-left: 0px;
list-style-type: none;
margin-bottom: 0px;
}
.nav-w ul li {
/*padding-left: 10px;*/
text-transform: uppercase;
position: relative;
width: 100%;
}
/* ol inside content area*/
.nav-w>ul {
padding-left: 0px;
padding-right: 0px;
}
.nav-w ul>li ul {
padding-left: 0px;
padding-right: 0px;
display: none;
}
.active-menu {
color: red !important;
}
.nav-w>ul li::after {
text-transform: uppercase;
content: "+";
position: absolute;
left: 15px;
top: 4px;
line-height: 30px;
font-size: 20px;
z-index: 0;
}
.nav-w>ul li ul li::after {
text-transform: uppercase;
content: "";
position: absolute;
left: 0px;
top: 5px;
line-height: 32px;
font-size: 20px;
z-index: 0;
}
.nav-w ul li ul li a {
padding-left: 45px;
}
.nav-w a:hover {
background: #f5f5f5;
border-left: 2px solid #178B43;
}
<div class="nav-w">
<ul class="">
<li>Share Information
<ul class="" style="display: none;">
<li>Share Overview</li>
<li>Share Graph </li>
<li>Investement Calculator</li>
<li>Historical Share Prices</li>
</ul>
</li>
<li>Financial Information
<ul class="" style="display: none;">
<li>Earning Releases</li>
<li>Financial Statements</li>
<li><a href="/investor-relations/financial-information/presentation">Presentation
</a></li>
<li><a href="/investor-relations/financial-information/quarterly-key-figures">Quarterly Key Figures
</a></li>
<li><a href="/investor-relations/financial-information/annual-key-figures">Annual Key Figures
</a></li>
</ul>
</li>
</ul>
</div>

Corrected your script,
$('.nav-w ul li').each(function() {
if ($(this).hasClass('active-menu')) {
$(this).parents("ul").css('display', 'block');
}
})
$('.nav-w ul li') will return array of elements, you will need run loop through it to find active element then open it's parent.
I have manually added active-menu class to below li to test the code.
<li class="active-menu">Earning Releases</li>
$(".nav-w > ul > li > a").click(function() {
$(this).next().slideToggle();
});
//open active list
$('.nav-w ul li').each(function() {
if ($(this).hasClass('active-menu')) {
$(this).parents("ul").css('display', 'block');
}
})
// compare url with nav url to show active url
$(function() {
//var url = window.location.href;
var url = window.location.pathname;
var pgurl = window.location.href.substr(
window.location.href.lastIndexOf("/") + 1
);
$(".nav-w ul li a").each(function() {
if ($(this).attr("href") == url || $(this).attr("href") == "") {
$(this).addClass("active-menu");
}
});
console.log("url : " + window.location.pathname);
});
.nav-w a {
color: black;
padding: 10px 15px;
padding-left: 35px;
text-decoration: none;
display: block;
border-bottom: 1px solid #f1f1f1;
font-size: 12px;
font-weight: 600;
/* color: #178B43 !important; */
color: #757575;
}
/* ul inside content area*/
.nav-w ul {
margin-left: 0px;
list-style-type: none;
margin-bottom: 0px;
}
.nav-w ul li {
/*padding-left: 10px;*/
text-transform: uppercase;
position: relative;
width: 100%;
}
/* ol inside content area*/
.nav-w>ul {
padding-left: 0px;
padding-right: 0px;
}
.nav-w ul>li ul {
padding-left: 0px;
padding-right: 0px;
display: none;
}
.active-menu {
color: red !important;
}
.nav-w>ul li::after {
text-transform: uppercase;
content: "+";
position: absolute;
left: 15px;
top: 4px;
line-height: 30px;
font-size: 20px;
z-index: 0;
}
.nav-w>ul li ul li::after {
text-transform: uppercase;
content: "";
position: absolute;
left: 0px;
top: 5px;
line-height: 32px;
font-size: 20px;
z-index: 0;
}
.nav-w ul li ul li a {
padding-left: 45px;
}
.nav-w a:hover {
background: #f5f5f5;
border-left: 2px solid #178B43;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="nav-w">
<ul class="">
<li>Share Information
<ul class="" style="display: none;">
<li>Share Overview</li>
<li>Share Graph </li>
<li>Investement Calculator</li>
<li>Historical Share Prices</li>
</ul>
</li>
<li>Financial Information
<ul class="" style="display: none;">
<li class="active-menu">Earning Releases</li>
<li>Financial Statements</li>
<li><a href="/investor-relations/financial-information/presentation">Presentation
</a></li>
<li><a href="/investor-relations/financial-information/quarterly-key-figures">Quarterly Key Figures
</a></li>
<li><a href="/investor-relations/financial-information/annual-key-figures">Annual Key Figures
</a></li>
</ul>
</li>
</ul>
</div>

JQuery category filter breaks when a category is more than 2 words

I am using Jquery to show project categories and filter the projects by which category is selected.
View the code pen here: https://codepen.io/saintasia/pen/dzqZov
HTML:
<body>
<div class="container">
<nav>
<ul>
<li class="current">All projects</li>
<li>Front-end</li>
<li>Back-end</li>
<li>Apps</li>
<li>Design</li>
<li>Testing Testing Testing</li>
</ul>
</nav>
<div id="projects">
<h1 class="heading">All Projects</h1>
<ul id="gallery">
<li class="design"><img src="https://source.unsplash.com/jjtdL443L4w/700x700"></li>
<li class="apps"><img src="https://source.unsplash.com/y1yQQmozTBw/700x700"></li>
<li class="back-end"><img src="https://source.unsplash.com/b18TRXc8UPQ/700x700"></li>
<li class="apps design"><img src="https://source.unsplash.com/klRB1BB9pV8/700x700"></li>
<li class="front-end testing-testing-testing back-end"><img src="https://source.unsplash.com/y1yQQmozTBw/700x700"></li>
<li class="front-end design"><img src="https://source.unsplash.com/1vwwZ-BmmrE/700x700"></li>
<li class="apps"><img src="https://source.unsplash.com/WLOCr03nGr0/700x700"></li>
<li class="back-end"><img src="https://source.unsplash.com/iOykDIkZLQw/700x700"></li>
</ul>
</nav>
</div>
<!-- modal gallery -->
<div class="gallery">
<a class="close" href="#">
<i>
<span class="bar"></span>
<span class="bar"></span>
</i>
</a>
<img src="">
</div>
</div>
</body>
CSS:
* {
margin: 0;
padding: 0;
}
body {
color: #333;
font-size: 13px;
background: #f4f4f4;
font-family: sans-serif;
overflow:auto;
}
.container {
width: 90%;
max-width: 960px;
margin: 30px auto;
position: relative;
text-align: center;
}
h1 {
margin-bottom: 20px;
text-transform: uppercase;
color: #F39CC3;
}
nav {
display: block;
width: 100%;
}
ul {
list-style: none;
margin-bottom: 20px;
}
nav > ul > li {
display: inline-block;
}
nav > ul > li > a {
text-transform: uppercase;
padding: 4px 10px;
margin-right: 2px;
margin-left: 2px;
text-decoration: none;
color: #27A4DD;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 25px;
border: 1px solid #27A4DD;
-webkit-transition: all 300ms ease-in-out;
-moz-transition: all 300ms ease-in-out;
transition: all 300ms ease-in-out;
}
.hidden {
display: none;
}
nav > ul > li > a:hover, .current a {
color: #fff;
background-color: #27A4DD;
}
#projects > ul > li {
display: inline-block;
float: left;
margin-right: 10px;
margin-bottom: 5px;
width: 23%;
height: auto;
cursor: pointer;
border-radius: 5px;
/* Padding stays within the width */
box-sizing: border-box;
position: relative;
opacity: 0.7;
-webkit-transition: all 300ms ease-in-out;
-moz-transition: all 300ms ease-in-out;
transition: all 300ms ease-in-out;
}
#projects > ul > li:hover {
opacity: 1;
}
img {
max-width: 100%;
border-radius: 5px;
}
.gallery {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: rgba(0,0,0,0.8);
padding: 40px 10px;
display: none;
box-sizing: border-box;
}
.gallery > img {
max-height: 100%;
width: auto;
}
.close i {
position: fixed;
top: 10px;
right: 10px;
height: 30px;
width: 30px;
}
.bar {
display: block;
position: absolute;
top: 13px;
float: left;
width: 30px;
border-bottom: 4px solid #fff;
transform: rotate(45deg);
}
.bar:first-child {
transform: rotate(-45deg);
}
#media (max-width: 768px){
#projects > ul > li {
width: 48%;
}
}
#media (max-width: 568px) {
#projects > ul > li {
width: 100%;
}
}
JS:
$(document).ready(function(){
// filter
$('nav a').on('click', function(event){
event.preventDefault();
// current class
$('nav li.current').removeClass('current');
$(this).parent().addClass('current');
// set new heading
$('h1.heading').text($(this).text());
// filter link text
var category = $(this).text().toLowerCase().replace(' ', '-');
// remove hidden class if "all" is selected
if(category == 'all-projects'){
$('ul#gallery li:hidden').fadeIn('slow').removeClass('hidden');
} else {
$('ul#gallery li').each(function(){
if(!$(this).hasClass(category)){
$(this).hide().addClass('hidden');
} else {
$(this).fadeIn('slow').removeClass('hidden');
}
});
}
return false;
});
// lightbox
$('ul#gallery a').on('click', function(event){
event.preventDefault();
var link = $(this).find('img').attr('src');
$('.gallery img').attr('src', '');
$('.gallery img').attr('src', link);
$('.gallery').fadeIn('slow');
});
// close lightbox
$('.gallery').on('click', function(event){
event.preventDefault();
$('.gallery').fadeOut('slow');
});
});
The problem I am having is that if a category is more than 2 words, it doesn't show the projects with that category. You'll see in the code pen that there is a category called "Testing Testing Testing" and one of the projects has that category assigned to it. But, when you click the Testing Testing Testing category, no projects show up. All of the other categories work however, because they are all only 2 words long.
Any help is greatly appreciated!

Your code break because the .replace(' ', '-') code just replace the first space
if you want to change all space with '-', you should change this code
var category = $(this).text().toLowerCase().replace(' ', '-');
to this
var category = $(this).text().toLowerCase().split(' ').join('-');

On click, toggle a previously clicked icon back to it's original state

I have two drop down menus on a navigation bar, and have gotten the icons to toggle as long as that anchor is clicked, but i can not figure out how to get one to reset if a separate sub menu is clicked. I'm asking if there's a way to make this happen with how it is laid out now, and if not, how do i achieve this?
I'm also sorry in advance if this whole thing is littered with rookie mistakes.
I tried to condense the JSfiddle as much as possible, but you may need to expand the side part to see the affected icons to the right. I left out the responsive portion.
$(document).ready(function() {
$('.menu-toggle').click(function() {
$('nav').toggleClass('active')
})
$('ul li').click(function() {
$(this).siblings().removeClass('active');
$(this).toggleClass('active');
})
})
$("nav ul li a").click(function() {
$(this).find("i").toggleClass("fa-angle-down fa-angle-up");
});
body {
margin: 0;
padding: 0;
font-family: "Helvetica Neue", sans-serif;
background: url(img/sunset.jpg);
background-attachment: fixed;
background-position: center;
}
header {
position: absolute;
top: 0;
left: 0;
padding: 0 20px;
background: #000000;
width: 100%;
box-sizing: border-box;
}
.header-icons {
color: white;
}
header nav ul li a.active span {
color: red;
}
header nav {
float: right;
}
header nav ul {
margin: 0;
padding: 0;
display: inline-flex;
}
header nav ul li {
list-style: none;
position: relative;
}
.sub-menu {
color: fff;
}
header nav ul li ul {
position: absolute;
left: 0;
display: none;
}
header nav ul li.active ul {
display: block;
}
header nav ul li ul li {
display: block;
width: auto;
text-align: center;
}
header nav ul li ul li a {
background: linear-gradient(#000000, #34282C);
border-style: inset;
border-color: #000;
}
/*full screen header*/
header nav ul li a {
font-family: "Helvetica Neue", sans-serif;
height: 50px;
line-height: 50px;
padding: 0 20px;
color: #fff;
text-decoration: none;
display: block;
}
header nav ul li a:hover {
transition: .25s;
font-weight: ;
color: #000000;
background: #2196f3;
}
header nav ul li a.active {
background: #25383C;
font-weight: normal;
color: #fff;
}
header nav ul li a.active:before {
content: '\f096';
font-family: fontAwesome;
font-size: 25%;
position: absolute;
line-height: 50px;
bottom: 20px;
right: 2px;
color: #fff;
cursor: pointer;
}
.menu-toggle {
color: #fff;
float: right;
line-height: 50px;
font-size: 24px;
cursor: pointer;
display: none;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<head>
<title>Practice</title>
<link rel="stylesheet" type="text/css" href="CSS/style.css">
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.13/css/all.css">
</head>
<body>
<header>
<nav>
<ul>
<li><span class="header-icons"><i class="fas fa-pen-square fa-fw"></i></span>Services<span class="sub-menu"><i class="fas fa-angle-down fa-fw"></i></span>
<ul>
<li>Link</li>
<li>Link</li>
<li>Link</li>
<li>Link</li>
</ul>
</li>
<li><span class="header-icons"><i class="far fa-image fa-fw"></i></span>Portfolio<span class="sub-menu"><i class="fas fa-angle-down fa-fw"></i></span>
<ul>
<li>Link </li>
<li>Link </li>
<li>Link </li>
<li>Link </li>
</ul>
</ul>
</nav>
</div>
<div class="menu-toggle"><i class="fa fa-bars" aria-hidden="true"></i>
</div>
</header>
</body>

This is another solution just for your reference. I check for the active class under li tag, then remove or add the fa-angle-down or fa-angle-up class on i tag.
$('.menu-toggle').click(function(){
$('nav').toggleClass('active')
})
$('ul li').click(function(){
$(this).siblings().removeClass('active');
$(this).toggleClass('active');
// Check for active class
if($(this).hasClass('active')){
$(this).parent().find("i").removeClass("fa-angle-up").addClass("fa-angle-down");
}
$(this).find("i").toggleClass("fa-angle-down fa-angle-up");
})
https://jsfiddle.net/80wne34L/79/

Normally this is achieved by:
Make all arrows down.
Make clicked arrow up.
This function will work for you:
$("nav ul li a").click(function() {
// Cache variables (for speed)
var $this = $(this),
$arrow = $this.find('.sub-menu i');
// Make all arrows point down, excepted clicked arrow
$('.sub-menu i').not($arrow).addClass('fa-angle-down').removeClass('fa-angle-up');
// Toggle this arrow
$arrow.toggleClass("fa-angle-down fa-angle-up");
});
$(document).ready(function() {
$('.menu-toggle').click(function() {
$('nav').toggleClass('active')
})
$('ul li').click(function() {
$(this).siblings().removeClass('active');
$(this).toggleClass('active');
});
// Move into $(document).ready() for good practices
$("nav ul li a").click(function() {
// Cache variables (for speed)
var $this = $(this),
$arrow = $this.find('.sub-menu i');
// Make all arrows point down, excepted clicked arrow
$('.sub-menu i').not($arrow).addClass('fa-angle-down').removeClass('fa-angle-up');
// Toggle this arrow
$arrow.toggleClass("fa-angle-down fa-angle-up");
});
})
body {
margin: 0;
padding: 0;
font-family: "Helvetica Neue", sans-serif;
background: url(img/sunset.jpg);
background-attachment: fixed;
background-position: center;
}
header {
position: absolute;
top: 0;
left: 0;
padding: 0 20px;
background: #000000;
width: 100%;
box-sizing: border-box;
}
.header-icons {
color: white;
}
header nav ul li a.active span {
color: red;
}
header nav {
float: right;
}
header nav ul {
margin: 0;
padding: 0;
display: inline-flex;
}
header nav ul li {
list-style: none;
position: relative;
}
.sub-menu {
color: fff;
}
header nav ul li ul {
position: absolute;
left: 0;
display: none;
}
header nav ul li.active ul {
display: block;
}
header nav ul li ul li {
display: block;
width: auto;
text-align: center;
}
header nav ul li ul li a {
background: linear-gradient(#000000, #34282C);
border-style: inset;
border-color: #000;
}
/*full screen header*/
header nav ul li a {
font-family: "Helvetica Neue", sans-serif;
height: 50px;
line-height: 50px;
padding: 0 20px;
color: #fff;
text-decoration: none;
display: block;
}
header nav ul li a:hover {
transition: .25s;
font-weight: ;
color: #000000;
background: #2196f3;
}
header nav ul li a.active {
background: #25383C;
font-weight: normal;
color: #fff;
}
header nav ul li a.active:before {
content: '\f096';
font-family: fontAwesome;
font-size: 25%;
position: absolute;
line-height: 50px;
bottom: 20px;
right: 2px;
color: #fff;
cursor: pointer;
}
.menu-toggle {
color: #fff;
float: right;
line-height: 50px;
font-size: 24px;
cursor: pointer;
display: none;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<head>
<title>Practice</title>
<link rel="stylesheet" type="text/css" href="CSS/style.css">
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.13/css/all.css">
</head>
<body>
<header>
<nav>
<ul>
<li><span class="header-icons"><i class="fas fa-pen-square fa-fw"></i></span>Services<span class="sub-menu"><i class="fas fa-angle-down fa-fw"></i></span>
<ul>
<li>Link</li>
<li>Link</li>
<li>Link</li>
<li>Link</li>
</ul>
</li>
<li>
<a href="#">
<span class="header-icons"><i class="far fa-image fa-fw"></i></span> Portfolio
<span class="sub-menu"><i class="fas fa-angle-down fa-fw"></i></span>
</a>
<ul>
<li>Link </li>
<li>Link </li>
<li>Link </li>
<li>Link </li>
</ul>
</ul>
</nav>
</div>
<div class="menu-toggle"><i class="fa fa-bars" aria-hidden="true"></i>
</div>
</header>
</body>

How would you switch focus to an input text upon clicking an item on a dropdown menu?

I have a website that has a dropdown menu and an input box. For user comfort, I am thinking it would be nice to have it so that when the user clicks on an option in the dropdown menu, the mouse cursor is immediately focused inside the input box so that they can begin typing right away, rather than having to click into it every time.
How can this be achieved?
Here is my Jsfiddle: http://jsfiddle.net/mlynn/jyrbepyz/3/
Thank you.
HTML
<section id="heady">
<div style="text-align: left;padding:25px 70px;display:inline-block;float:left;"><b>Site</b></p></div>
<div style="text-align: right;padding:25px 70px;display:inline-block;float:right;">
Home |
Generic |
Elements |
Sign Up
</div>
</section>
<section id="wrapper">
<br><br>
<img src="images/blacksquare.png" width="525" height="197"></img>
<br><br><br>
<div>
<div style="vertical-align:top;display:inline-block;float:left;">
<ul class="navbar cf">
<!-- <li>item 2</li> -->
<li style="width:200px;">
#
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
<li>7</li>
</ul>
</li>
</ul>
</div>
<div class="container lister" style="display:inline-block;float:left;vertical-align:top;padding:0px 0px 0px 10px;">
<form action="">
<input type="text" id="todo" placeholder="Enter a To-do and hit enter">
</form>
<br>
<!-- <ul class="active">
<li>Work X</li>
<li>Sleep X</li>
<li>Repeat X</li>
</ul> -->
</div>
<div class="container lister" style="display:inline-block;float:left;vertical-align:top;padding:0px 0px 0px 10px;">
<ul class="active">
<li>Work X</li>
<li>Sleep X</li>
<li>Repeat X</li>
</ul>
</div>
</div>
<div class="Category1">
<!--list items that user assigned "1" from dropdown menu would be placed in this div-->
</div>
<div class="Category2">
</div>
<div class="Category3">
</div>
<div class="Category4">
</div>
<div class="Category5">
</div>
<div class="Category6">
</div>
<div class="Category7">
</div>
</section>
<section id="feety">
I believe I exist
</section>
CSS
/*adder*/
#import url(http://fonts.googleapis.com/css?family=Open+Sans:400, 300, 600);
* {
padding:0;
margin:0;
}
html {
background:teal;
}
body {
/*background:url('https://snap-photos.s3.amazonaws.com/img-thumbs/960w/4657039731.jpg');*/
}
a {
color: #D9D9D9;
text-decoration: none;
}
a:active, a:hover {
text-decoration: underline;
}
#heady {
text-align: center;
width:100%;
height:75px;
background-color:#222; /*Back Colors*/
font-family: Tahoma;
font-size: 16px;
color:white;
position:relative;
}
#wrapper {
text-align: center;
width:1000px;
height:1000px;
margin-left:auto;
margin-right:auto;
background-color:teal; /*Back Colors*/
font-family: Tahoma;
font-size: 16px;
position:relative;
}
#feety {
text-align: center;
width:100%;
height:100px;
background-color:darkslateblue; /*Back Colors*/
font-family: Tahoma;
font-size: 16px;
color:white;
position:relative;
}
.Category1 {
background:blue;
}
.Category2 {
background:green;
}
.Category3 {
background:yellow;
}
.Category4 {
background:orange;
}
.Category5 {
background:purple;
}
.Category6 {
background:gold;
}
.Category7 {
background:maroon;
}
/* clearfix */
/**
* For modern browsers
* 1. The space content is one way to avoid an Opera bug when the
* contenteditable attribute is included anywhere else in the document.
* Otherwise it causes space to appear at the top and bottom of elements
* that are clearfixed.
* 2. The use of `table` rather than `block` is only necessary if using
* `:before` to contain the top-margins of child elements.
*/
.cf:before,
.cf:after {
content: " "; /* 1 */
display: table; /* 2 */
}
.cf:after {
clear: both;
}
.cf {
* zoom: 1;
}
ul.navbar {
background:white;
border-style:solid;
border-color:gray;
border-width:1px;
width: 200px;
border-radius: 4px;
}
.ActiveListItem:after {
content: "\25BC\00a0\00a0"; /*carat and spaces*/
float:right;
font-weight:900;
padding: 0px 0px;
font-size:100%;
line-height:20px; /*keeps carat in center of text*/
}
ul.navbar li a.ActiveListItem {
background:white !important;
color:black;
border-style:solid;
border-color:white;
border-radius:4px;
padding:3px 5px !important;
font-weight:normal !important;
margin-left:14px;/* got the activeitem centered with the list text this way*/
margin-right:0px;
}
ul.navbar li {
position: relative;
}
ul.navbar li a {
display: block;
color: white;
padding:10px 5px;
text-decoration:none;
transition: all .2s ease-in;
}
ul.navbar li a:hover,
ul.navbar li:hover > a {
background:#a6d0e1; /*Leaving for now, but keep in mind things bold slowly when you change this to gradient*/
color: #333;
font-weight:900;
}
ul.navbar li ul {
margin-top: 1px;
position: absolute;
background: #222;
font-size: 14px;
min-width: 200px;
display: none;
z-index: 99;
box-shadow: inset 0 2px 3px rgba(0,0,0,.6),
0 5px 10px rgba(0,0,0,.6);
}
ol, ul { list-style: outside none none; }
.hidden { display: none; }
/*Lister*/
.container {
width: 60%;
margin: 0px auto;
}
form { }
input,
ul {
background: #eee;
border-radius: 5px;
width: 100%;
box-sizing: border-box;
font-family:"Tahoma";
}
input {
padding: 10px 10px 10px 20px;
border: 1px solid #ccc;
}
.lister ul {
list-style: square inside;
padding: 10px;
}
.active { border: 1px solid #ccc; }
.inactive { display: none; }
.lister li {
padding: 10px;
font-weight: 600;
color: #34495e;
}
.lister li:nth-child(odd) {
background: #dadfe1;
border-radius: 5px;
}
.lister li > a {
float: right;
text-decoration: none;
color: #22313f;
font-weight: bold;
transition: all .2s ease-in-out;
}
.lister li > a:hover {
font-size: 110%;
color: #c0392b;
}
.lister li:before {
content: "#"; /*carat and spaces*/
float:left;
font-weight:900;
padding: 0px 0px;
font-size:100%;
line-height:20px; /*keeps carat in center of text*/
}
JS
// sub menus identification
$(function() {
$('.navbar ul li a').click(function(){
$('.navbar > li:first-child > a').text($(this).text());
$('.navbar > li > ul').addClass('hidden');
$('.navbar li ul').slideToggle(100);
});
$('.navbar > li').mouseenter(function(){
$(this).find('ul').removeClass('hidden');
});
$('.ActiveListItem').click(function(){
$('.navbar li ul').slideToggle(300);
});
});
//newList
$(document).ready(function() {
var ul = $('.lister ul'),
input = $('input');
input.focus();
$('form').submit(function () {
if (input.val() !== '') {
var inputVal = input.val(),
activeNumber = $('.ActiveListItem').text();
if (activeNumber == "1") {
/*I guess the fantasy code goes here...?*/
}
ul.append('<li>' + activeNumber + ' ' +inputVal + 'X</li>');
if (ul.hasClass('inactive')) {
ul.removeClass('inactive')
.addClass('active');
}
};
input.val('');
return false;
});
ul.on('click', 'a', function (e) {
e.preventDefault();
$(this).parent().remove();
if (ul.children().length == 0) {
ul.removeClass('active')
.addClass('inactive');
input.focus();
}
});
});

You're using var ul = $('.lister ul')
Go take a look where is your .lister and the child ul in your HTML
I mean you probably want to target the needed DROPDOWN UL anchors
using the right selector:
$(".navbar.cf li ul li").on("click", "a", function(e){
e.preventDefault();
input.focus();
});
http://jsfiddle.net/jyrbepyz/5/