Are you sure plugin, cannot make this work in MVC app

Are you sure plugin, cannot make this work in MVC app

New mvc app in VS2015. I had implemented the windows beforeunload, which sends the alert box in all situations, clean/dirty form,

  1. <script language="JavaScript"> window.onbeforeunload = confirmExit; function confirmExit() { return message to display in dialog box; }</script>
but CANNOT get this jquery add-in to work, at all.  why isnt it working? 

  1. <script type="text/javascript">
  2. $(function () {


  5. $('form').areYouSure();
at the top of the mvc edit.cshtml document:
  2. <head>
  3.     <meta charset="utf-8" />
  4.     <meta name="viewport" content="width=device-width, initial-scale=1.0">

  6.     <!-- CSS References Here -->
  7. </head>
  8. <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  9. <!-- Bootstrap CSS and bootstrap datepicker CSS used for styling the demo pages-->
  10. <link rel="stylesheet" href="~/Content/bootstrap-datepicker.css">
  11. <link rel="stylesheet" href="~/Content/bootstrap.css">

  13. <script src="~/Scripts/jquery-1.10.2.js"></script>
  14. <script src="~/Scripts/bootstrap-datepicker.js"></script>
  15. <script src="~/Scripts/are-you-sure.js"></script>
  16. <script src="~/Scripts/ays-beforeunload-shim.js"></script>

I manually downloaded and did a add/new item/ new javascript file, copied the contents from this projects github page into the manually named .js files in the /Scripts/ folder.  Project already had the jquery-1-10-2.js in there

tried but cannot make this work. when loading the form,  in IE, f12 says:
Object doesn't support property or method 'areYouSure'

have been trying for 2 days+, have tried variations on naming the form and div;  went back on a new project and did it all from scratch.  jquery itself works, the datepickers work.  this is the only thing to generate the error on the F12 tool