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<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.css"> <script src="http://code.jquery.com/jquery-1.11.3.min.js"></script> <script src="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.js"></script> <script> $(document).on("pagebeforeload",function(event){ alert("The " + event.type + " event was triggered"); }); </script> </head> <body> <div data-role="page"> <div data-role="header"> <h1>Header Text</h1> </div> <div data-role="main" class="ui-content"> <a href="externalpage.html">External page</a> </div> <div data-role="footer"> <h1>Footer Text</h1> </div> </div> </body> </html>