Edit in JSFiddle

$(document).on('pagebeforeshow', '#index', function(){ 
       
});

$(document).on('pagecontainershow', function (e, ui) {
    var activePage = $(':mobile-pagecontainer').pagecontainer('getActivePage').attr('id');
    if(activePage === 'index') {
  
    }
});
<!DOCTYPE html>
<html>
    <head>
        <title>jQM Complex Demo</title>
        <meta http-equiv='Content-Type' content='text/html; charset=utf-8'/>
        <meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0; minimum-scale=1.0; user-scalable=no; target-densityDpi=device-dpi"/>
        <link rel="stylesheet" href="http://code.jquery.com/mobile/1.4.2/jquery.mobile-1.4.2.min.css" /> 
        <!--<script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>-->
        <script src="http://code.jquery.com/mobile/1.4.2/jquery.mobile-1.4.2.min.js"></script>    
    </head>
    <body>     
        <div data-role="page" id="index" data-theme="a" >
            <div data-role="header">
                <h3>
                    First Page
                </h3>
                <a href="#second" class="ui-btn-right">Next</a>
            </div>
            
            <div data-role="content">

            </div>
            
            <div data-role="footer" data-position="fixed">
                
            </div>
        </div> 
        <div data-role="page" id="second" data-theme="a" >
            <div data-role="header">
                <h3>
                    Second Page
                </h3>
                <a href="#index" class="ui-btn-left">Back</a>
            </div>
            
            <div data-role="content">
                
            </div>
            
            <div data-role="footer" data-position="fixed">
                
            </div>
        </div>  
    </body>
</html>