<html>
<head>
<link rel="stylesheet" href="https://libs.baidu.com/jquerymobile/1.4.2/jquery.mobile.min.css">
<script src="https://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
<script src="https://libs.baidu.com/jquerymobile/1.4.2/jquery.mobile.min.js"></script>
<script>
$(document).on("pagebeforecreate",function(event){
$("span").text(event.type);
});
</script>
</head>
<body>
<div data-role="page" id="pageone">
<div data-role="header">
<h1>Header Text</h1>
</div>
<div data-role="content">
<p>The <span style="color:red">unknown</span> event was triggered upon page initialization.</p>
</div>
<div data-role="footer">
<h1>Footer Text</h1>
</div>
</div>
</body>
</html>