Menu
I have a single file for each page and i am trying to implement the pageinit event handler on every page (I think what belongs strictly to one page, should be declared there) as shown below:
<body>
<div id="myPage" data-role="page">
<!-- Content here -->
<script type="text/javascript">
$("#myPage").live('pageinit', function() {
// do something here...
});
</script>
</div>
</body>
The event is bound properly to the page, so the code is executed but - now my problem - if i go to another page and return later on the pageinit event will be executed twice. I think that is because the .live method binds the pageinit event again to the page. But shouldn't the pageinit event only called once at page initialization? What I am missing here?
521
I solve the issue by passing the name of the event, in this case the "pageinit" instead of the handler.
<script defer="defer" type="text/javascript">
var supplier = null;
$("#pageID").die("pageinit"); //<--- this is the fix
$("#pageID").live("pageinit", function(event){
console.log("initialized - @(ViewBag.ID)");
supplier = new Tradie.Supplier();
supplier.Initialize("@(ViewBag.ID)");
});
Ref: http://www.rodcerrada.com/post/2012/04/26/jQuery-Mobile-Pageinit-Fires-More-Than-Once.aspx
106
I think its probably best to move your JavaScript code into another file as while your navigating around your site jQuery Mobile may cleanup (read: delete from DOM) that myPage page and therefore will have to load it in again and hense rerun that same block of code you defined and bind 2 listeners for the pageinit event.
Thats basically why they suggest using the live or on functions however it falls over if you include the binding code on the page ;)
However if you insist on having your code placed on a per page basis than use bind instead of live.
Ref: http://jquerymobile.com/demos/1.0/docs/pages/page-cache.html
jQuery Mobile therefore has a simple mechanism to keep the DOM tidy. Whenever it loads a page via Ajax, jQuery Mobile flags the page to be removed from the DOM when you navigate away from it later (technically, on the pagehide event).
2
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
