Bootstrap : TypeError: $(...).modal is not a function

Use this. It will work. I have used bootstrap 3.3.5 and jquery 1.11.3

$('document').ready(function() {
  $('#btnTest').click(function() {
    $('#dummyModal').modal('show');
  });
});
body {
  background-color: #eee;
  padding-top: 40px;
  padding-bottom: 40px;
}
<!DOCTYPE html>
<html>

<head>
  <meta charset="utf8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width,initial-scale=1">
  <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
  <title>Modal Test</title>
</head>

<body>
  <div class="container">
    <button id="btnTest" class="btn btn-default">Show Modal</button>
    <div id="dummyModal" role="dialog" class="modal fade">
      <div class="modal-dialog">
        <div class="modal-content">
          <div class="modal-header">
            <button type="button" data-dismiss="modal" class="close">&times;</button>
            <h4 class="modal-title">Error</h4>
          </div>
          <div class="modal-body">
            <p>Quick Brown Fox Jumps Over The Lazy Dog</p>
          </div>
          <div class="modal-footer">
            <button type="button" data-dismiss="modal" class="btn btn-default">Close</button>
          </div>
        </div>
      </div>
    </div>
  </div>
  <script type="text/javascript" src="https://code.jquery.com/jquery-1.11.3.min.js"></script>
  <script type="text/javascript" src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
</body>

</html>

I was getting the same error because of jquery CDN (<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>) was added two times in the HTML head.


I had also faced same error when i was trying to call bootstrap modal from jquery. But this happens because we are using bootstrap modal and for this we need to attach one cdn bootstrap.min.js which is

<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>

Hope this will help as I missed that when i was trying to call bootstrap modal from jQuery using

$('#button').on('click',function(){ $('#myModal').modal(); });

myModal is the id of Bootstrap modal and you have to give a click event to a button when you call click that button a pop up modal will be displayed.