jQuery mobile $(document).ready equivalent

The best equivalent of $(document).ready() is $(document).bind('pageinit')

Just have a look at the jQuery Mobile documentation : http://jquerymobile.com/demos/1.1.1/docs/api/events.html

Important: Use $(document).bind('pageinit'), not $(document).ready()

The first thing you learn in jQuery is to call code inside the $(document).ready() function so everything will execute as soon as the DOM is loaded. However, in jQuery Mobile, Ajax is used to load the contents of each page into the DOM as you navigate, and the DOM ready handler only executes for the first page. To execute code whenever a new page is loaded and created, you can bind to the pageinit event. This event is explained in detail at the bottom of this page.

Bind to the "pageinit" event. From JQM docs: http://api.jquerymobile.com/pageinit/

I spent some time on researching the same since JQM docs are not very detailed at this point. Solution below works fine for me:

<script type="text/javascript">
$('div:jqmData(role="page")').live('pagebeforeshow',function(){
    // code to execute on each page change
});
</script>

You have to implement your own checking flow in order to prevent multiple initialization since the code above will run on every page change