"Add remove class on click using jQuery"
Bootstrap 4.1.1 Snippet by sunil8107

<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script> <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!------ Include the above in your HEAD tag ----------> <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!------ Include the above in your HEAD tag ----------> <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>btn ADD REMOVE CLASS</title> </head> <body> <div class="main_div"> <button type="button" class="btn">Button</button> <hr> <div class="box"> <h2>Lorem Ipsum dolor sit amet</h2> </div></div> <p class="text-center top_spac"> Create by <a target="_blank" href="https://in.linkedin.com/in/sunil-rajput-nattho-singh">Sunil Rajput</a></p> </body> </html>
.main_div{text-align:center; padding: 20px;} .box{ display:none;} .box.current{ display:block;}
$(document).ready(function(){ $('.btn').on('click',function(){ if($('.box').hasClass('current')){ $('.box').removeClass('current'); }else{ $('.box').addClass('current'); } }); });

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