How to create an expandable <li> element in html - javascript

So I have this competetion about creating a website and I want to create a list element which is expandable when the user for example sends the mouse over it just like in the website below and the options pop out
http://www.howtogeek.com/
This is the HTML
<ul>
<li>Artikuj</li>
<li>Na ndiqni</li>
<li>Rreth nesh</li>
</ul>
And this is the CSS
ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
border: 1px solid black;
background-color: black;
height: 37px;
border-radius: 20px;
}
li {
float: left;
font-family: 'Times New Roman', Times, serif
}
li a {
display: block;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
background-color: black
}
li a:hover:not(.active) {
background-color: gray;
}
li a.active {
color: white;
background-color: black;
}


Pure CSS:
ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
border: 1px solid black;
background-color: black;
height: 37px;
border-radius: 20px;
}
li {
float: left;
font-family: 'Times New Roman', Times, serif
}
li a {
display: block;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
background-color: black
}
li a:hover:not(.active) {
background-color: gray;
}
li a.active {
color: white;
background-color: black;
}
li ul {
display: none;
position: absolute;
}
li:hover ul {
display: block;
}
<ul>
<li>Artikuj
<ul>
<li>Artikuj</li>
<li>Na ndiqni</li>
<li>Rreth nesh</li>
</ul>
</li>
<li>Na ndiqni</li>
<li>Rreth nesh</li>
</ul>


CSS:
ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
background-color: #333;
}
li {
float: left;
}
li a, .dropbtn {
display: inline-block;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
li a:hover, .dropdown:hover .dropbtn {
background-color: red;
}
li.dropdown {
display: inline-block;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}
.dropdown-content a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
text-align: left;
}
li .menuall{
width: 600px;
}
.menuall_list{
float: left;
width: 200px;
}
.dropdown-content a:hover {background-color: #f1f1f1}
.dropdown:hover .dropdown-content {
display: block;
}
HTML:
<ul>
<li><a class="active" href="#home">Home</a></li>
<li>News</li>
<li class="dropdown">
Artikuj
<div class="dropdown-content">
<div class="menuall">
<div class="menuall_list">
Link 1
Link 2
Link 3
</div>
<div class="menuall_list">
Link 1
Link 2
Link 3
</div>
<div class="menuall_list">
Link 1
Link 2
Link 3
</div>
</div>
</div>
</li>
</ul>
This code is for as like www.howtogeek.com menu. Now you change the color or shape as per your design.

Related

Dropdown button is not customizing

I have added a basic clickable dropdown button to my menu, but it can't be customize or even show the changes on the live website. And the dropdown content will not appear on separate line:
Here is a screenshot of what i am referring too:
https://imgur.com/hzKm7WI
I have searched google related to my problem, but everything I've searched is not working. Am I doing something wrong
/* 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('.button')) {
var myDropdown = document.getElementById("myDropdown");
if (myDropdown.classList.contains('show')) {
myDropdown.classList.remove('show');
}
}
}
body {
margin: 0;
padding: 0;
margin-top: 130px;
overflow-x: hidden;
}
.nav-menu a img {
float: left;
margin-left: 10px;
}
.nav-menu ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
background-color: rgba(0, 0, 0, 0.9);
margin-top: -130px;
}
.nav-menu li {
float: left;
}
.nav-menu li a,
.dropbtn {
display: inline-block;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
.nav-menu li a:hover,
.dropdown:hover .dropbtn {
border-top: 2px solid #ff0000;
}
.nav-menu li.dropdown {
display: inline-block;
}
.nav-menu .dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
z-index: 1;
}
.nav-menu .dropdown-content a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
text-align: left;
}
.nav-menu .dropdown-content a:hover {
background-color: #ff0000;
color: #fff;
}
.nav-menu .dropdown:hover .dropdown-content {
display: block;
}
.nav-menu li.social {
float: right;
}
li.navbar {
overflow: hidden;
background-color: transparent;
font-family: Arial, Helvetica, sans-serif;
float: right;
padding-right: 100px;
}
li.navbar a {
float: left;
font-size: 16px;
color: #fff;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
.dropdown-menu {
float: left;
overflow: hidden;
}
.dropdown-menu .button {
cursor: pointer;
font-size: 16px;
border: none;
outline: none;
color: white;
padding: 14px 16px;
background-color: inherit;
font-family: inherit;
margin: 0;
}
li.navbar a:hover,
.dropdown-menu:hover .button,
.button:focus {
background-color: red;
}
.dropdown-menu-content {
color: #fff;
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
z-index: 1;
}
.dropdown-menu-content a {
float: left;
color: red;
padding: 12px 16px;
text-decoration: none;
display: block;
text-align: left;
}
.dropdown-menu-content a:hover {
background-color: #ddd;
}
.show {
display: block;
}
.navbar-nav .open .dropdown-menu .button {
cursor: pointer;
font-size: 16px;
border: none;
outline: none;
color: white;
padding: 14px 16px;
background-color: inherit;
font-family: inherit;
margin: 0;
}
<!DOCTYPE html>
<html>
<head>
<title>Title Here</title>
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.1/css/all.css" integrity="sha384-50oBUHEmvpQ+1lW4y57PTFmhCaXp0ML5d60M1M7uH2+nqUivzIebhndOJK28anvf" crossorigin="anonymous">
<link rel="stylesheet" type="text/css" href="CSS/style.css?v=12345">
</head>
<body>
<div class="nav-menu">
<ul>
<img src="img/logo.jpg" style="width:50px">
<li class="dropdown">
Games
<div class="dropdown-content">
Link 1
Link 2
Link 3
</div>
</li>
<li class="dropdown">
Crews
<div class="dropdown-content">
Link 1
Link 2
Link 3
</div>
</li>
<li>Jobs</li>
<li>Photos</li>
<li>Videos</li>
<li>Events</li>
<li>News</li>
<li class="navbar">
<div class="dropdown-menu">
<button class="button" onclick="myFunction()">
<i class="fas fa-user"></i>
</button>
<div class="dropdown-menu-content" id="myDropdown">
Link 1
Link 2
Link 3
</div>
</li>
<li class="social">
Sign In
Sign Up
<i class="fas fa-search"></i>
</li>
</div>
</li>
</ul>

Have you tried writing css with more specificity like
.navbar-nav .open .dropdown-menu .button {
cursor: pointer;
font-size: 16px;
border: none;
outline: none;
color: white;
padding: 14px 16px;
background-color: inherit;
font-family: inherit;
margin: 0;
}
However if what you meant was it gets applied locally and not when deployed on to live site it could be due to css caching by browser in which case you can use a cache busting strategy like appending a query string(unique) at the end of url when linking the css eg
<link rel="stylesheet" type="text/css" href="./path/to/cssfile.css?v=12345">.

i've tried your code & there should be no problem.
I think its because your style was overridden by another class. You can check it with browser inspector.
In that case you should prioritize yous css by using !important like this
.dropdown-menu-content a {
float: none;
color: black;
padding: 12px 16px;
text-decoration: none;
display: block !important;
text-align: left;
}
you can find more info about css specificity here
https://developer.mozilla.org/en-US/docs/Web/CSS/Specificity

Can't figure out how to make search bar like the navbar. Also search element is not working with CSS

I put the navbar above the header if that affects anything.
How it currently looks like:
Can't figure out how to make search bar like the navbar. Also, the search element is not working with CSS. If anyone can help that would be amazing! I'm lost. I am trying to make the search bar and the navbar looks like the rest of the tab buttons and elements. Same height as the other elements.
HTML
<div class="navbar">
<a class="active" href="#home">Home</a>
<a herf="#about">About </a>
<a herf="#patientinfo"> Patient Information </a>
<div class="dropdown">
<button class = "dropbutton">Select Hospital
</button>
<div class= "dropdown-content">
Hospital
Hospital
Hospital
Hospital
</div>
</div>
<div class ="search">
<form action="/action_page.php"> <!--backend -->
<input type="text" name="search" placeholder="Search">
<button type="submit">Submit</button>
</form>
<!--search bar -->
</div>
</div>
CSS
.navbar {
overflow: hidden;
background-color: black;
font-family: 'Roboto';
width: 100%;
}
.navbar a {
float: left;
font-size: 16px;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
.navbar a.active{ /*shows active tab */
background-color:red;
color:white;
}
.navbar input[type=text] {
background-color: inherit;
color: white;
width: 25%;
float: left;
padding: inherit;
font-size: 16px;
}
}
.navbar .search button {
float: left;
padding: inherit;
margin:0;
margin-top:0px;
background-color: inherit;
font-size:15px;
cursor:pointer;
border:none;
}
.dropdown {
float:left;
overflow: hidden;
}
.dropdown .dropbutton {
font-size: 16px;
border: none;
outline: none;
color: white;
padding: 14px 16px;
background-color: inherit;
font-family: inherit;
margin: 0;
}
.navbar a:hover, .dropdown:hover .dropbutton {
background-color: red;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
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: left;
}
.dropdown-content a:hover {
background-color: red;
}
.dropdown:hover .dropdown-content { /* WHEN U HOVER OVER IT SHOWS THE MENU
*/
display: block;
}

This is how I would handle this. But note that you will have to do some responsive styles. I put in a fail safe so you dont have bad overlapping. Note that it looks alittle off on the code snippet because its so small, you should check it out by pasting it in a fresh html file.
.navbar {
overflow: hidden;
background-color: black;
font-family: 'Roboto';
width: 100%;
position: relative;
height: 47px;
}
.navbar a {
float: left;
font-size: 16px;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
.navbar a.active{ /*shows active tab */
background-color:red;
color:white;
}
.dropdown {
float:left;
overflow: hidden;
}
.dropdown .dropbutton {
font-size: 16px;
border: none;
outline: none;
color: white;
padding: 14px 16px;
background-color: inherit;
font-family: inherit;
margin: 0;
}
.navbar a:hover, .dropdown:hover .dropbutton {
background-color: red;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
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: left;
}
.dropdown-content a:hover {
background-color: red;
}
.dropdown:hover .dropdown-content { /* WHEN U HOVER OVER IT SHOWS THE MENU
*/
display: block;
}
.search {
position: absolute;
bottom: 0px;
right: 0px;
}
.search-input {
height: 47px;
border: none;
background-color: inherit;
color: white;
font-size: 16px;
}
.search-input:active {
background-color: red;
}
.search-input:focus {
background-color: red;
}
.search-button {
padding: 16px 10px;
height: 47px;
border: none;
color: white;
background-color: black;
font-size: 16px;
cursor:pointer;
}
.nav-links {
padding-right: 280px;
height: 47px;
}
<div class="navbar">
<div class="nav-links">
<a class="active" href="#home">Home</a>
<a herf="#about">About </a>
<a herf="#patientinfo"> Patient Information </a>
<div class="dropdown">
<button class = "dropbutton">Select Hospital
</button>
<div class= "dropdown-content">
Hospital
Hospital
Hospital
Hospital
</div>
</div>
</div>
<div class="search">
<form action="/action_page.php"> <!--backend -->
<input class="search-input" type="text" name="search" placeholder="Search">
<button class="search-button" type="submit">Submit</button>
</form>
<!--search bar -->
</div>
</div>

navbar responsive issue when resize the browser width?

i have an issue for the responsive navbar, when i resize the browser for the mobile view and open then close the menu button, after that make the browser full screen for the big screen view the navbar will disappear
any help for that issue
i need to add another feature to fix the navbar when scroll down but when scroll on the mobile the menu it looks messed up
below my code(on snippet)
$(document).ready(function(){
$(".menu").click(function(){
$("nav").slideToggle(800);
})
});
nav{
width: 100%;
background: #202c45;
padding: 0 50px;
box-sizing: border-box;
}
nav h1{
margin: 0;
padding: 0;
float: left;
padding-top: 18px;
}
nav h1 a{
color: #fff;
text-decoration: none;
}
nav ul{
margin: 0;
padding: 0;
float: right;
}
nav ul li{
list-style: none;
display: inline-block;
padding: 20px;
transition: 0.5s;
}
nav ul li:hover{
background: #f2184f;
}
nav ul li a{
color: #fff;
text-decoration: none;
}
.responsive-bar{
width: 100%;
background: #202c45;
padding: 10px 30px;
box-sizing: border-box;
display: none;
}
.responsive-bar h3{
margin: 0;
padding: 3px 0;
float: left;
color:#fff;
}
.responsive-bar h3 a{
color:#fff;
text-decoration: none;
}
.responsive-bar h4{
margin: 0;
padding: 0;
color: #fff;
float: right;
cursor: pointer;
padding: 5px 10px;
background:#f2184f;
text-transform: uppercase;
}
#media (max-width:768px){
nav{
display: none;
padding: 0;
}
.responsive-bar{
display: block;
}
nav h1{
display: block;
float: none;
}
nav ul{
float: none;
}
nav ul li{
display: block;
text-align: center;
padding: 15px 20px;
border-bottom: 1px solid rgba(255,255,255,.1)
}
#full-logo{
display: none;
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.0.0/jquery.min.js"></script>
<nav>
<h1 id="full-logo">MyCar</h1>
<ul>
<li>Home</li>
<li>About</li>
</ul>
<div style="clear:both;"></div>
</nav>
<div class="responsive-bar">
<h3 class="brand">MyCar</h3>
<h4 class="menu">Menu</h4>
<div style="clear:both;"></div>
</div>

As per your html structure you have to add below code to your css
#media (min-width:768px){
nav{
display: block !important;
}
}
Using this you don't have to make any changes in your html and css.
$(document).ready(function(){
$(".menu").click(function(){
$("nav").slideToggle(800);
})
});
nav{
width: 100%;
background: #202c45;
padding: 0 50px;
box-sizing: border-box;
}
nav h1{
margin: 0;
padding: 0;
float: left;
padding-top: 18px;
}
nav h1 a{
color: #fff;
text-decoration: none;
}
nav ul{
margin: 0;
padding: 0;
float: right;
}
nav ul li{
list-style: none;
display: inline-block;
padding: 20px;
transition: 0.5s;
}
nav ul li:hover{
background: #f2184f;
}
nav ul li a{
color: #fff;
text-decoration: none;
}
.responsive-bar{
width: 100%;
background: #202c45;
padding: 10px 30px;
box-sizing: border-box;
display: none;
}
.responsive-bar h3{
margin: 0;
padding: 3px 0;
float: left;
color:#fff;
}
.responsive-bar h3 a{
color:#fff;
text-decoration: none;
}
.responsive-bar h4{
margin: 0;
padding: 0;
color: #fff;
float: right;
cursor: pointer;
padding: 5px 10px;
background:#f2184f;
text-transform: uppercase;
}
#media (max-width:768px){
nav{
display: none;
padding: 0;
}
.responsive-bar{
display: block;
}
nav h1{
display: block;
float: none;
}
nav ul{
float: none;
}
nav ul li{
display: block;
text-align: center;
padding: 15px 20px;
border-bottom: 1px solid rgba(255,255,255,.1)
}
#full-logo{
display: none;
}
}
#media (min-width:768px){
nav{
display: block !important;
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.0.0/jquery.min.js"></script>
<nav>
<h1 id="full-logo">MyCar</h1>
<ul>
<li>Home</li>
<li>About</li>
</ul>
<div style="clear:both;"></div>
</nav>
<div class="responsive-bar">
<h3 class="brand">MyCar</h3>
<h4 class="menu">Menu</h4>
<div style="clear:both;"></div>
</div>

You also need to update your navigation when the window is resized. Kindly check. Hope this is helpful to you. Just made a update in jquery.
$(document).ready(function(){
$(".menu").click(function(){
$("nav").slideToggle(800);
});
$( window ).resize(function() {
if($(window).width() > 767) {
$("nav").slideDown(800);
}
});
});
nav{
width: 100%;
background: #202c45;
padding: 0 50px;
box-sizing: border-box;
display: block
}
nav h1{
margin: 0;
padding: 0;
float: left;
padding-top: 18px;
}
nav h1 a{
color: #fff;
text-decoration: none;
}
nav ul{
margin: 0;
padding: 0;
float: right;
}
nav ul li{
list-style: none;
display: inline-block;
padding: 20px;
transition: 0.5s;
}
nav ul li:hover{
background: #f2184f;
}
nav ul li a{
color: #fff;
text-decoration: none;
}
.responsive-bar{
width: 100%;
background: #202c45;
padding: 10px 30px;
box-sizing: border-box;
display: none;
}
.responsive-bar h3{
margin: 0;
padding: 3px 0;
float: left;
color:#fff;
}
.responsive-bar h3 a{
color:#fff;
text-decoration: none;
}
.responsive-bar h4{
margin: 0;
padding: 0;
color: #fff;
float: right;
cursor: pointer;
padding: 5px 10px;
background:#f2184f;
text-transform: uppercase;
}
#media (max-width:768px){
nav{
display: none;
padding: 0;
}
.responsive-bar{
display: block;
}
nav h1{
display: block;
float: none;
}
nav ul{
float: none;
}
nav ul li{
display: block;
text-align: center;
padding: 15px 20px;
border-bottom: 1px solid rgba(255,255,255,.1)
}
#full-logo{
display: none;
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.0.0/jquery.min.js"></script>
<nav>
<h1 id="full-logo">MyCar</h1>
<ul>
<li>Home</li>
<li>About</li>
</ul>
<div style="clear:both;"></div>
</nav>
<div class="responsive-bar">
<h3 class="brand">MyCar</h3>
<h4 class="menu">Menu</h4>
<div style="clear:both;"></div>
</div>

Please check the below line of code to add image above nav and make header sticky.
Script
$(document).ready(function(){
$(".menu").click(function(){
$("nav").slideToggle(800);
$("nav").toggleClass("fixed_nav");
$(".responsive-bar").toggleClass("addtop");
});
});
$(window).scroll(function(){
if($(window).width() > 767) {
if ($(window).scrollTop() >= 150) {
$('nav').addClass('fixed-header');
}
else {
$('nav').removeClass('fixed-header');
}
}
else {
if ($(window).scrollTop() >= 150) {
$('.responsive-bar').addClass('fixed-header');
}
else {
$('.responsive-bar').removeClass('fixed-header');
}
}
});
HTML
<div class="img-wrapper">
<img src="https://via.placeholder.com/1250x150">
</div>
<nav class="nav-bar">
<h1 id="full-logo">MyCar</h1>
<ul>
<li>Home</li>
<li>About</li>
</ul>
<div style="clear:both;"></div>
</nav>
<div class="responsive-bar">
<h3 class="brand">MyCar</h3>
<h4 class="menu">Menu</h4>
<div style="clear:both;"></div>
</div>
.............
CSS
nav{
width: 100%;
background: #202c45;
padding: 0 50px;
box-sizing: border-box;
}
nav h1{
margin: 0;
padding: 0;
float: left;
padding-top: 18px;
}
nav h1 a{
color: #fff;
text-decoration: none;
}
nav ul{
margin: 0;
padding: 0;
float: right;
}
nav ul li{
list-style: none;
display: inline-block;
padding: 20px;
transition: 0.5s;
}
nav ul li:hover{
background: #f2184f;
}
nav ul li a{
color: #fff;
text-decoration: none;
}
.responsive-bar{
width: 100%;
background: #202c45;
padding: 10px 30px;
box-sizing: border-box;
display: none;
}
.responsive-bar h3{
margin: 0;
padding: 3px 0;
float: left;
color:#fff;
}
.responsive-bar h3 a{
color:#fff;
text-decoration: none;
}
.responsive-bar h4{
margin: 0;
padding: 0;
color: #fff;
float: right;
cursor: pointer;
padding: 5px 10px;
background:#f2184f;
text-transform: uppercase;
}
#media (max-width:768px){
nav{
display: none;
padding: 0;
}
.responsive-bar{
display: block;
}
nav h1{
display: block;
float: none;
}
nav ul{
float: none;
}
nav ul li{
display: block;
text-align: center;
padding: 15px 20px;
border-bottom: 1px solid rgba(255,255,255,.1)
}
#full-logo{
display: none;
}
img {
display: none;
}
.nav-bar.fixed_nav{
display: none;
position: fixed;
width: 100%;
left: 0px;
right: 0px;
top: 0px;
}
.fixed-header.addtop {
top: 98px;
}
}
#media (min-width:768px){
nav{
display: block !important;
}
}
.sticky {
position: fixed;
top: 0;
width: 100%;
}
.fixed-header {
position: fixed;
top: 0;
left: 0;
width: 100%;
}

Add a dropdown(submenu) to existing menu

I want to add a dropdown option(submenu) to existing menu bar.
Here is my CSS and HTML code.
I found a lot of drop down menus.
But it is very important to me that, I just want to add the new function to my existing menu, without much changes to the whole menu.
/* Add a black background color to the top navigation */
.topnav {
background-color: #333;
overflow: hidden;
}
/* Style the links inside the navigation bar */
.topnav a {
float: left;
display: block;
color: #f2f2f2;
text-align: right;
padding: 14px 16px;
text-decoration: none;
font-size: 17px;
}
/* Change the color of links on hover */
.topnav a:hover {
background-color: #ddd;
color: black;
}
/* Add a color to the active/current link */
.topnav a.active {
background-color: #4CAF50;
color: white;
}
<div class="topnav" id="myTopnav">
Speed Dial
Speed Dial

I just tried to meet your requirement by modifying your own code.
Style/CSS corrections are left for you.
Try it out.
Screenshot
Code
.topnav {
background-color: #333;
height: 50px;
}
.topnav li {
float: left;
display: block;
text-align: right;
padding: 14px 16px;
font-size: 17px;
background: transparent;
width: 150px;
}
.topnav li a{
padding: 14px 16px;
color: #f2f2f2;
text-decoration: none;
}
.topnav li a:hover{
background-color: #ddd;
color: black;
}
.topnav li.active {
background-color: #4CAF50;
color: white;
}
.subnav {
background-color: blue;
overflow: hidden;
display : none;
width: 200px;
margin-top: 15px;
padding: 0px;
}
.subnav li {
float: left;
display: block;
text-align: right;
padding: 14px 16px;
font-size: 17px;
}
.subnav li a {
color: #f2f2f2;
text-decoration: none;
}
.subnav li:hover {
background-color: #ddd;
color: black;
}
.subnav li.active {
background-color: #4CAF50;
color: white;
}
.topnav li:hover .subnav{
display : block;
}
<ul class="topnav" id="myTopnav">
<li>
Main 1
</li>
<li>
Main 2
</li>
<li>
Main 3 with sub
<ul class="subnav">
<li>
sub 1
</li>
<li>
sub 2
</li>
</ul>
</li>
</ul>

JavaScript + CSS Single Collapsible Vertical Menu

Everybody, I have been learning and trying to make a collapsible vertical menu using JavaScript and CSS.
What should I do so that when I expand both menus and I click again on user 1, the user 2 will be hidden?
Here's the coding:
body {
background:#ffffff;
margin: 0 auto;
}
#nav{
width: 200px;
padding: 0;
margin-bottom: 0px;
font-size: 10px;
font-family: Verdana;
color: #999999;
}
#nav ul {
list-style: none;
margin: 0;
padding: 0;
border: none;
}
#nav li {
border-bottom: 1px solid #fff;
margin: 0;
width: auto;
}
li ul {
border-bottom: 1px solid #000000;
border-top: 1px solid #000000;
position: relative;
display:none;
}
ul li a {
display:block;
text-decoration: none;
color: #000000;
background: #8CDD81;
line-height:2em;
height:2em;
padding:2px 2px
}
li li a {
background:#D7DBDD
}
li:hover li a, li.over li a {
background-color: #D7DBDD;
}
li a:hover,
li:hover a, li.over a,
li:hover li a:hover, li.over li a:hover {
color: #000000;
background-color: #F4D03F ;
}
header {
font-family: 'Lobster', cursive;
text-align: center;
font-size: 25px;
}
#info {
font-size: 18px;
color: #555;
text-align: center;
margin-bottom: 25px;
}
a{
color: #074E8C;
}
.scrollbar {
margin-left: 30px;
float: left;
height: 200px;
width: 210px;
background: #F5F5F5;
overflow-y: scroll;
margin-bottom: 25px;
}
.force-overflow {
min-height: 450px;
}
#wrapper {
text-align: center;
width: 500px;
margin: auto;
}
/*
* STYLE 4
*/
#style-4::-webkit-scrollbar-track
{
-webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3);
background-color: #F5F5F5;
}
#style-4::-webkit-scrollbar
{
width: 10px;
background-color: #cccccc;
}
#style-4::-webkit-scrollbar-thumb
{
background-color: #9fa6ad;
border: 2px solid #9fa6ad;
}
li ul li {}
li.on ul {
display:block
}
li.off ul {
display:none
}
<script type="text/javascript">
<!--//--><![CDATA[//><!--
startList = function() {
if (document.getElementById) {
navRoot = document.getElementById("nav");
for (i=0; i<navRoot.childNodes.length; i++) {
node = navRoot.childNodes[i];
if (node.nodeName=="LI") {
node.onclick=function() {
this.className = (this.className == "on") ? "off" : "on";
}
}
}
}
}
window.onload=startList;
//--><!]]>
</script>
<body>
<id="wrapper">
<div class="scrollbar" id="style-4" class="force-overflow">
<ul id="nav">
<li><strong>MENU</strong></li>
<li><strong>User 1 ></strong>
<ul>
<li>Name </li>
<li>Age</li>
</ul>
</li>
<li><strong>User 2 ></strong>
<ul>
<li>Name</li>
<li>Age</li>
</ul>
</li>
</div>
</div>
</ul>
</body>

off previously selected li by removing on class from other element
if(document.getElementsByClassName("on").length>0)
document.getElementsByClassName("on")[0].className = "off";
body {
background: #ffffff;
margin: 0 auto;
}
#nav {
width: 200px;
padding: 0;
margin-bottom: 0px;
font-size: 10px;
font-family: Verdana;
color: #999999;
}
#nav ul {
list-style: none;
margin: 0;
padding: 0;
border: none;
}
#nav li {
border-bottom: 1px solid #fff;
margin: 0;
width: auto;
}
li ul {
border-bottom: 1px solid #000000;
border-top: 1px solid #000000;
position: relative;
display: none;
}
ul li a {
display: block;
text-decoration: none;
color: #000000;
background: #8CDD81;
line-height: 2em;
height: 2em;
padding: 2px 2px
}
li li a {
background: #D7DBDD
}
li:hover li a,
li.over li a {
background-color: #D7DBDD;
}
li a:hover,
li:hover a,
li.over a,
li:hover li a:hover,
li.over li a:hover {
color: #000000;
background-color: #F4D03F;
}
header {
font-family: 'Lobster', cursive;
text-align: center;
font-size: 25px;
}
#info {
font-size: 18px;
color: #555;
text-align: center;
margin-bottom: 25px;
}
a {
color: #074E8C;
}
.scrollbar {
margin-left: 30px;
float: left;
height: 200px;
width: 210px;
background: #F5F5F5;
overflow-y: scroll;
margin-bottom: 25px;
}
.force-overflow {
min-height: 450px;
}
#wrapper {
text-align: center;
width: 500px;
margin: auto;
}
/*
* STYLE 4
*/
#style-4::-webkit-scrollbar-track {
-webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3);
background-color: #F5F5F5;
}
#style-4::-webkit-scrollbar {
width: 10px;
background-color: #cccccc;
}
#style-4::-webkit-scrollbar-thumb {
background-color: #9fa6ad;
border: 2px solid #9fa6ad;
}
li ul li {} li.on ul {
display: block
}
li.off ul {
display: none
}
<script type="text/javascript">
<!--//--><![CDATA[//><!--
startList = function() {
if (document.getElementById) {
navRoot = document.getElementById("nav");
for (i = 0; i < navRoot.childNodes.length; i++) {
node = navRoot.childNodes[i];
if (node.nodeName == "LI") {
node.onclick = function() {
if(document.getElementsByClassName("on").length>0)
document.getElementsByClassName("on")[0].className = "off";
this.className = (this.className == "on") ? "off" : "on";
}
}
}
}
}
window.onload = startList;
//--><!]]>
</script>
<body>
<id="wrapper">
<div class="scrollbar" id="style-4" class="force-overflow">
<ul id="nav">
<li><strong>MENU</strong>
</li>
<li><strong>User 1 ></strong>
<ul>
<li>Name
</li>
<li>Age
</li>
</ul>
</li>
<li><strong>User 2 ></strong>
<ul>
<li>Name
</li>
<li>Age
</li>
</ul>
</li>
</div>
</div>
</ul>
</body>

You can use jQuery to reduce your coding efforts.
Following is the only code you need.
body {
background: #ffffff;
margin: 0 auto;
}
#nav {
width: 200px;
padding: 0;
margin-bottom: 0px;
font-size: 10px;
font-family: Verdana;
color: #999999;
}
#nav ul {
list-style: none;
margin: 0;
padding: 0;
border: none;
}
#nav li {
border-bottom: 1px solid #fff;
margin: 0;
width: auto;
}
li ul {
border-bottom: 1px solid #000000;
border-top: 1px solid #000000;
position: relative;
display: none;
}
ul li a {
display: block;
text-decoration: none;
color: #000000;
background: #8CDD81;
line-height: 2em;
height: 2em;
padding: 2px 2px
}
li li a {
background: #D7DBDD
}
li:hover li a,
li.over li a {
background-color: #D7DBDD;
}
li a:hover,
li:hover a,
li.over a,
li:hover li a:hover,
li.over li a:hover {
color: #000000;
background-color: #F4D03F;
}
header {
font-family: 'Lobster', cursive;
text-align: center;
font-size: 25px;
}
#info {
font-size: 18px;
color: #555;
text-align: center;
margin-bottom: 25px;
}
a {
color: #074E8C;
}
.scrollbar {
margin-left: 30px;
float: left;
height: 200px;
width: 210px;
background: #F5F5F5;
overflow-y: scroll;
margin-bottom: 25px;
}
.force-overflow {
min-height: 450px;
}
#wrapper {
text-align: center;
width: 500px;
margin: auto;
}
/*
* STYLE 4
*/
#style-4::-webkit-scrollbar-track {
-webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3);
background-color: #F5F5F5;
}
#style-4::-webkit-scrollbar {
width: 10px;
background-color: #cccccc;
}
#style-4::-webkit-scrollbar-thumb {
background-color: #9fa6ad;
border: 2px solid #9fa6ad;
}
li ul li {} li.on ul {
display: block
}
li.off ul {
display: none
}
<script type="text/javascript" src='https://code.jquery.com/jquery-3.1.1.min.js'> </script>
<script type="text/javascript">
$(document).ready(function(){
$("#nav li").click(function(){
currentClass = $(this).attr('class');
$("#nav li").removeClass('on').addClass('off');
newClass = (currentClass == 'on' ? 'off' : 'on');
$(this).removeClass('off').addClass(newClass);
});
});
</script>
<body>
<id="wrapper">
<div class="scrollbar" id="style-4" class="force-overflow">
<ul id="nav">
<li class=''><strong>MENU</strong>
</li>
<li><strong>User 1 ></strong>
<ul>
<li>Name
</li>
<li>Age
</li>
</ul>
</li>
<li><strong>User 2 ></strong>
<ul>
<li>Name
</li>
<li>Age
</li>
</ul>
</li>
<li><strong>User 3 ></strong>
<ul>
<li>Name
</li>
<li>Age
</li>
</ul>
</li>
</div>
</div>
</ul>
</body>

I made this nav menu for reference. It's responsive to screen size too.
var btn = document.getElementById('navBtn');
var ul = document.getElementById('navUl');
btn.addEventListener("click", function(){
ul.classList.toggle("active");
});
#bar {
position: fixed;
top: 0px;
left: 0px;
width: 100%;
background-color: #333;
}
nav ul {
list-style: none;
padding: 0px;
margin: 0px;
}
nav ul li {
display: inline-block;
}
nav ul li a {
display: inline-block;
padding: 20px;
color: #fff;
font-family: Verdana;
text-decoration: none;
}
nav ul li:hover {
background-color: #666;
}
#navBtn {
display: none;
}
#media screen and (max-width: 500px) {
nav ul li,
nav ul li a {
text-align: center;
display: block;
}
nav ul {
display: none;
}
nav ul.active {
display: block;
}
#navBtn {
display: block;
width: 60px;
height: 60px;
border: 1px solid #fff;
background-color: #333;
color: #fff;
}
}
<div id="bar">
<button id="navBtn">☰</button>
<nav>
<ul id="navUl">
<li>home</li>
<li>news</li>
<li>contact</li>
<li>about</li>
</ul>
</nav>
</div>
As a side note, you can also technically do this with pure CSS (though, that's a bit tricky; you'd use a checkbox w/ labels for it).
Also, I saw your className = code, so I wanted to specifically point out the Element.classList bit in my code. It comes with .add(), .remove(), .toggle() and other useful methods.

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