<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 ----------> <div id="modalOnLoad" class="modal fade"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-body text-center"> <p> Lorem ipsum is placeholder text commonly used in the graphic, print, and publishing industries for previewing layouts and visual mockups. </p> <button type="button" class="btn blue btn-outline" data-dismiss="modal" aria-hidden="true">Close</button> </div> </div> </div> </div>

$(document).ready(function () { $("#modalOnLoad").modal('show'); });