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Editorial Team
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Asked: 2026-06-02T01:06:02+00:00

I have a file- Site.js with the following method: function Init() { $(document).ready(function() {

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I have a file- “Site.js” with the following method:

function Init() {
  $(document).ready(function() {
    //some init actions here
  });
}
function jQuery.fn.DivToggle(div) {
  $(div).toggle('fast');
  //some other animation code here
}

in my Index.cshtml file (I’m using asp.net mvc), I have this:

<!DOCTYPE html>
<html>
  <head id="Head1" runat="server">
    <script src="@Url.Content("~/Scripts/jquery-1.7.1.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/Site.js")" type="text/javascript"></script>
  </head>
  <body>
    <script type="text/javascript">
      $(function () {
        Init();
      });
    </script>
  </body>
</html>

I get this error when I run the project:
“Microsoft JScript runtime error: ‘Init’ is undefined”

Any idea what I’m doing wrong?

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1 Answer

  1. Editorial Team

    Init is not defined because there is a syntax error in Site.js.

    function jQuery.fn.DivToggle(div) {
  $(div).toggle('fast');
  //some other animation code here
}

    You can’t actually do that. It should be:

    jQuery.fn.DivToggle = function(div) {
  $(div).toggle('fast');
  //some other animation code here
};

    P.S. $(function(){ is the same as $(document).ready(function(){. You don’t need the $(document).ready(function(){ inside your Init function.

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