jQuery addClass example

Change class name on click in jQuery

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>

<div id="banner-message">
  <div class="js-share-cf-popover">Share</div>  
  <button class="js-share-cf-btn">Popup</button>
</div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#banner-message {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  font-size: 25px;
  text-align: center;
  transition: all 0.2s;
  margin: 0 auto;
  width: 300px;
}

button {
  background: #0084ff;
  border: none;
  border-radius: 5px;
  padding: 8px 14px;
  font-size: 15px;
  color: #fff;
}

#banner-message.alt {
  background: #0084ff;
  color: #fff;
  margin-top: 40px;
  width: 200px;
}

#banner-message.alt button {
  background: #fff;
  color: #000;
}

.js-share-cf-popover {
  background: red;
  color: white;
}

JavaScript

$(function() {
  var ref = $('.js-share-cf-btn');
  var popover = $('.js-share-cf-popover');
  popover.hide();

  $(document).on('click', function(e) {
    var target = $(e.target);
    if (target.is(ref) || target.is(popover) ) {
      e.preventDefault();
      popover.show();
      var popper = new Popper(ref, popover, {
        placement: 'right',
      });
    }else {
      popover.hide();
    }
  });

});