jQuery mobile 1.1.0: strange 'pagebeforechange' behavior - jquery-mobile

Question

I've got big HTML page with "divs" that are considered "pages" and, I'm swapping between those "divs".
I've added this code:
$(document).bind('pagebeforechange', function(e, data) {
if ( typeof data.toPage === "string" ) {
console.log(data.toPage);
}
}
And here's the console log:
#page-main
http://ba.m.p.fr/#page-panier
http://ba.m.p.fr/#page-horaires
http://ba.m.p.fr/#page-horaires&ui-page=1-5
http://ba.m.p.fr/#page-horaire-valider
So, sometimes it's only the id sometimes it's the whole URL. How comes?

Answer 1

I've made a workaround, this is not an explanation. My old code was like:
$(document).bind('pagebeforechange', function(e, data) {
if ( typeof data.toPage === "string" ) {
if (data.toPage == "page-aa" ) {
/* code for page-aa */
} else if (data.toPage === "page-bb" ) {
/* code for page-bb */
} else if (data.toPage === "page-cc" ) {
/* code for page-cc */
}
}
}
And now my new code is like this: i'm relying on 'pagebeforeshow':
$("div#page-aa").on('pagebeforeshow', function(e, data) {
/* code for page-aa */
});
$("div#page-bb").on('pagebeforeshow', function(e, data) {
/* code for page-bb */
});
$("div#page-cc").on('pagebeforeshow', function(e, data) {
/* code for page-cc */
});
And it works flawlessly. But this is a workaround, not an explanation of my question. Anyway if someone googles for that problem, and reads my question, maybe this workaround will help!

Answer 2

toPage can be either a jQuery collection object containing the page to be transitioned to, OR a URL reference for a page to be loaded/transitioned to.
// We only want to handle changePage() calls where the caller is
// asking us to load a page by URL.
if ( typeof data.toPage === "string" ) ...
http://jquerymobile.com/demos/1.1.1/docs/pages/page-dynamic.html