- Trending Categories
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How to add an active class to the current element with JavaScript?
To add an active class to the current element with JavaScript, the code is as follows −
Example
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1" />
<style>
.btn {
border: none;
outline: none;
padding: 10px 16px;
background-color: #6ea2f0;
cursor: pointer;
color:white;
font-size: 18px;
}
.active, .btn:hover {
background-color: #666;
color: white;
}
</style>
</head>
<body>
<h1>Active Button Example</h1>
<div id="sampleDiv">
<button class="btn">Giraffe</button>
<button class="btn active">Cow</button>
<button class="btn">Lion</button>
<button class="btn">Leopard</button>
<button class="btn">Cheetah</button>
</div>
<h2>Press any of the above button to set it class to active</h2>
<script>
var btns = document.querySelectorAll(".btn");
Array.from(btns).forEach(item => {
item.addEventListener("click", () => {
var selected = document.getElementsByClassName("active");
selected[0].className = selected[0].className.replace(" active", "");
item.className += " active";
});
});
</script>
</body>
</html>Output
The above code will produce the following output −
On clicking any other button −
Updated on: 08-May-2020
2K+ Views
Advertisements