jQuery and IE11

jQuery and IE11

I am (re) starting with jQuery after a long absence.

Am I doing something wrong or is normal that the following code does not display the corresponding icons in IE11?

<!doctype html>

<html lang="en">

<head>

  <meta charset="utf-8">

  <title>jQuery UI Button - Icons</title>

  <link rel="stylesheet" href="http:///code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">

  <script src="http://code.jquery.com/jquery-1.10.2.js"></script>

  <script src="http://code.jquery.com/ui/1.11.4/jquery-ui.js"></script>


  <script>

  $(function() {

    $( "button:first" ).button({

      icons: {

        primary: "ui-icon-locked"

      },

      text: false

    }).next().button({

      icons: {

        primary: "ui-icon-locked"

      }

    }).next().button({

      icons: {

        primary: "ui-icon-gear",

        secondary: "ui-icon-triangle-1-s"

      }

    }).next().button({

      icons: {

        primary: "ui-icon-gear",

        secondary: "ui-icon-triangle-1-s"

      },

      text: false

    });

  });

  </script>

</head>

<body>

 

<button>Button with icon only</button>

<button>Button with icon on the left</button>

<button>Button with two icons</button>

<button>Button with two icons and no text</button>

 

 

</body>

</html>