multiselect bootstrap buttons

HTML

<script src="https://code.jquery.com/jquery-3.4.1.slim.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.css">
<!-- 
  Bootstrap docs: https://getbootstrap.com/docs
-->

<div class="container">
 
 <div class="container">
   <button id="choice1" data-toggle="button" class="btn btn-secondary  option_group1">choice1</button>
   <button id="choice2" data-toggle="button" class="btn btn-secondary  option_group1">choice2</button>
   <button id="choice3" data-toggle="button" class="btn btn-secondary  option_group1">choice3</button>
   <button onclick="showSelection();">Update Selection</button>
   <div id="selection_display">
   </div>
 </div>
</div>

CSS

.btn-secondary:not(:disabled):not(.disabled):active, 
.btn-secondary:not(:disabled):not(.disabled).active, 
.show > .btn-secondary.dropdown-toggle {
    color: #fff;
    background-color: red;
    border-color: red;
}

JavaScript

function showSelection() {
    jQuery("#selection_display").empty();
    jQuery("#selection_display").append("<hr>choice1  active:" + jQuery("#choice1").hasClass('active'));
    jQuery("#selection_display").append("<hr>choice2  active:" + jQuery("#choice2").hasClass('active'));
    jQuery("#selection_display").append("<hr>choice3  active:" + jQuery("#choice3").hasClass('active'));
}

jQuery(document).ready(function () {
  jQuery(".option_group1").on("click", function (e) {
  	 e.stopPropagation();
     jQuery(this).button('toggle');
     showSelection();
  });
});