Add modal dynamically

source code

        $("body").append('<!-- Modal -->\
            <div class="modal fade" id="certificate_modal" role="dialog">\
              <div class="modal-dialog">\
                <!-- Modal content-->\
                  <div class="modal-content">\
                    <div class="modal-header">\
                      <button type="button" class="close" data-dismiss="modal">&times;</button>\
                      <h4 class="modal-title">Zertifikat Einstellung</h4>\
                    </div>\
                    <div class="modal-body">\
                      <p>Some text in the modal.</p>\
                    </div>\
                    <div class="modal-footer">\
                      <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>\
                    </div>\
                  </div>\
               </div>\
            </div>');