jQuery Mobile - firing pageshow event only once - jquery-mobile

Question

I am trying to execute a snippet of JS only once, after the page has completely loaded and JQM has taken care of all the ui modifications (i.e. listviews, buttons, etc.). I do want it to execute only on that page, and not on subsequent pages.
What I tried first, was pageshow
<script>
$('[data-role=page]').live("pageshow", function() {
alert("Ready!");
});
</script>
This has the problem that the function is now attached to the page div and gets executed every time any subsequent page gets shown. However, I only want this to be executed once, and only for the page that contains that JS snippet.
Is there a way to listen to the pageshow event, without actually attaching the function to it.
The only way I was able to do it was by binding and unbinding like this:
<script>
$('[data-role=page]').bind("pageshow.test", testfun);
function testfun() {
alert("Ready!");
$('[data-role=page]').unbind("pageshow.test", testfun);
}
</script>
But is there a more elegant way to do so?

Answer 1

jQuery has a one function to bind an event handler to be executed only once. Check the reference.

Answer 2

The pageinit event fires once per page just after the jQuery Mobile framework initializes its widgets; I think it may be what you're looking for.
pageinit
Triggered on the page being initialized, after initialization occurs.
We recommend binding to this event instead of DOM ready() because this
will work regardless of whether the page is loaded directly or if the
content is pulled into another page as part of the Ajax navigation
system.
Source: http://jquerymobile.com/demos/1.1.0-rc.1/docs/api/events.html
If you want to bind to a specific page and not the rest, then select only the page you want to alter... Here's an example:
<script>
$(document).delegate('#my-page-id', 'pageinit', function() {
alert("PageInit!");
});
</script>