jQuery addClass example

Change class name on click in jQuery

by Sebastian Eschlböck

HTML

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">

<style>

</style>
</head>
<body>

<nav class="sidenav">
  <a class="clickable" href="#about">About</a>
  <a class="clickable" href="#services">Services</a>
  <a class="clickable" href="#clients">Clients</a>
  <a class="clickable" href="#contact">Contact</a>
  
  
  <button class="dropdown-btn">    
    <span class="clickable">
      Dropdown
    </span>
    <i class="dropdown-open fa fa-caret-left"></i>
  </button>
  <div class="dropdown-container">
    <a class="clickable" href="#">Link 1</a>
  <button class="dropdown-btn">
    Dropdown 
    <i class="fa fa-caret-left"></i>
  </button>
  <div class="dropdown-container">
    <a class="clickable" href="#">Link 1</a>
    <a class="clickable" href="#">Link 2</a>
    <a class="clickable" href="#">Link 3</a>
  </div>    
    <a class="clickable" href="#">Link 2</a>
    <a class="clickable" href="#">Link 3</a>
  </div>
  <a href="#contact">Search</a>
</nav>

<div class="main">
  <h2>Sidebar Dropdown</h2>
  <p>Click on the dropdown button to open the dropdown menu inside the side navigation.</p>
  <p>This sidebar is of full height (100%) and always shown.</p>
  <p>Some random text..</p>
</div>

</body>
</html>

CSS

body {
  font-family: "Lato", sans-serif;
}

/* Fixed sidenav, full height */
.sidenav {
  height: 100%;
  width: 200px;
  position: fixed;
  z-index: 1;
  top: 0;
  left: 0;
  background-color: #ccc;
  overflow-x: hidden;
  padding-top: 20px;
}

/* Style the sidenav links and the dropdown button */
.sidenav a, .dropdown-btn {
  padding: 6px 8px 6px 16px;
  text-decoration: none;
  font-size: 20px;
  color: #818181;
  display: block;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  outline: none;
}

/* On mouse-over */
.sidenav a:hover, .dropdown-btn:hover {
  color: #f1f1f1;
}

/* Main content */
.main {
  margin-left: 200px; /* Same as the width of the sidenav */
  font-size: 20px; /* Increased text to enable scrolling */
  padding: 0px 10px;
}

/* Add an active class to the active dropdown button */
.active {
  background-color: green;
  color: white;
}

/* Dropdown container (hidden by default). Optional: add a lighter background color and some left padding to change the design of the dropdown content */
.dropdown-container {
  display: none;
  background-color: #262626;
  padding-left: 8px;
}

/* Optional: Style the caret down icon */
.fa-caret-down {
  float: right;
  padding-right: 8px;
}

.fa-caret-left {
  float: right;
  padding-right: 8px;
}

/* Some media queries for responsiveness */
@media screen and (max-height: 450px) {
  .sidenav {padding-top: 15px;}
  .sidenav a {font-size: 18px;}
}

JavaScript

$('.clickable').click(function(){
	alert($(this).text());
});

$('.dropdown-open').click(function(){
	$(this).parent().toggleClass("active");
  $(this).toggleClass("fa-caret-left fa-caret-down");
	var dropDownContent = $(this).parent().next(".dropdown-container");
	if(dropDownContent.is(":visible")){
		dropDownContent.hide("blind");
		
    
	}else{
		dropDownContent.show("blind");
	}
});