jQueryMobile page events not firing when navigating to a different html page - jquery-mobile

I'm trying to navigate to a different .html page using
$.mobile.changePage( "PlayGame.html", { transition: "slideup"}, true, true)
PlayGame.html is being transitioned to, however, none of the following are firing:
$(document).bind("mobileinit", function()
{
alert(1);
});
$('#gamePage').live('pageinit',function(event, ui)
{
alert('pageinit');
});
$('#gamePage').live('pagebeforeshow',function(event, ui)
{
alert('booooo');
});
However, if I do window.location.href = "PlayGame.html" then everything fires accordingly.
What am I missing?
Thanks
Tom

If the code in your example is in the <head> of the PlayGame.html document then it will not be included when the jQuery Mobile framework grabs the page via AJAX. That is why your custom code runs when you load the whole page but not when clicking on a link from another page.
You will want to either put your custom JavaScript in a single file and include it on every page (so it will be available no matter what page the user enters your site from) or you will want to move the custom JavaScript for each page into the <div data-role="page"> element for each page (so it will be included when the page is pulled into the DOM).
The reason is that when you click on a link to an external file, jQuery Mobile uses AJAX to pull out the first instance of a <div data-role="page"> element and places that element in the current DOM, everything else in the document is discarded.
Here is some suggested reading about how jQuery Mobile navigation works: http://jquerymobile.com/demos/1.0rc2/docs/pages/page-navmodel.html

Related

jQuery mobile finds elements from first page when on second page

I've got a two page jQuery mobile app, and within the init function, the following code..
Call to the init function
$(document).on('pageinit', function(){
MyPages.init();
});
init: function() {
$('td[id$="drops"]').each(function() {
console.log("Element: " + $(this).attr('id'));
}),
};
I have elements in page one that match the above, such as '#early_drops', '#late_drops', etc. These elements do not exist on page 2, but when page 2 loads, the elements are displayed in the console just like when page 1 is loaded. What am I missing here?
Thanks very much,
-Adam vonNieda
By default jQuery loads pages using AJAX into the existing page in order to allow the animated transitions. If you don't want this you just need to 'turn off' the AJAX loading.
See description here: http://view.jquerymobile.com/1.3.2/dist/demos/widgets/links/
Links that point to other domains or that have rel="external", data-ajax="false" or target attributes will not be loaded with AJAX. Instead, these links will cause a full page refresh with no animated transition. Both attributes (rel="external" and data-ajax="false") have the same effect, but a different semantic meaning: rel="external" should be used when linking to another site or domain, while data-ajax="false" is useful for simply opting a page within your domain from being loaded via AJAX.
You can also disable AJAX across the entire app by default using global configuration: http://api.jquerymobile.com/global-config/

Jquery Mobile pre-cache page

In my jQuery Mobile I have 2 pages, index.html and test.html. There is a <p> tag in the index page which has a class, so when the <p> tag is clicked on my javascript, it wants to load test.html.
But with jQuery Mobile when the index page loads the test page, it is not in the DOM. So in order to go to the test page and replace the contents of a div in test.html it must first be loaded into the DOM. So here is what I am doing:
When try2 is clicked, I do a load page to get it into the DOM, then I replace the div with the new html, and then I change to the page. The html of the div never changes.
$('.try2')
.click(function(){
$.mobile.loadPage( 'test.html', { showLoadMsg: false } );
$('#mytest').html('i am here now').fadeIn('slow');
$.mobile.changePage( "test.html", { transition: "slideup"} );
});
Pre-fetch the page by using the data-prefetch attribute on a link that points to the second page. Docs: http://jquerymobile.com/demos/1.1.0/docs/pages/page-cache.html
Then bind to either the pageinit or pageshow event to update the div before the second page is transitioned into view.
Your current code won't work because the first two lines in your event handler are asynchronous, so to use them you would have to utilize the callback functions for the asynchronous functions.
Update
If you want to pre-cache a page but don't have a direct link to the page, you can always create a dummy link and hide it from view:
<a data-precache href="page2.html" style="display:none;"></a>

jQuery Mobile breaks my site

I load jQuery Mobile on my site when I am only on a mobile touchscreen device. When I do though. It messes up everything. For example, select menus don't work quite right, as well, the words "loading, loading, undefined" appear at the bottom of the page. I know I am missing something but do not know what.
Any ideas on what I could be missing?
Thanks
EDIT: Okay, So I took out all scripts that I am running except for jQuery and jQuery Mobile. I call jQuery first, then jQuery Mobile. It still breaks aspects of the site.
What it breaks:
- I cannot navigate to any other page via the navbar, if I click on a nav item, and look in the url, the correct url appears (with a # in it) like: /#/about-us/ Then, it just redirects to the home page and the page goes white
Select menus have weird results. It prints out whatever is in the select right beside it. And if you in landscape mode on the ipad and you click on the select, it sends you to the bottom of the page (weird).
it prints out 'loading' twice and 'undefined' once at the bottom of the page
All I have for scripts are jQuery and jQuery Mobile. I should also mention that I am using wordpress so it might have enqueued some other scripts (I have deregistered Wordpress' version of jquery and enqueued my own)
Anyone else experiencing these problems?
jQueryMobile replace your normal links with Ajax one, so every page can be loaded by the ajax, text on docs page:
(..) 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.
If you want to disable single link to be loaded by the ajax you should write something like this:
<a href="/some_page" data-ajax="false" >link</a>
or do it globally:
$(document).bind("mobileinit", function() {
$.mobile.ajaxEnabled = false;
});
jm also does replacement on other elements so you should try using data-role attribute, for example:
<select id="test" data-role="none">
to disable replacing this element.
For those like me where
$.mobile.ajaxEnabled = false;
did not work and the whole page layout seems still broken:
For me this one works (- set it inline before loading the jquery mobile file):
<script>
// Preload configuration
$( document ).on( "mobileinit", function() {
$.mobile.autoInitializePage = false; // This one does the job
});
</script>
Furthermore if you want to disable jQuery mobile automatic link and form handling via ajax, set (as dvk3 said) ajaxEnabled to false and pushStateEnabled to false as recommended:
$.mobile.ajaxEnabled = false;
$.mobile.pushStateEnabled = false; // Recommended is false, when ajax is disabled
For further information see: http://api.jquerymobile.com/global-config/
I'm using v1.4.5
Same happened to me by mixing mobile with other frameworks. Fixed issue but getting custom build of jQuery.mobile. My case was that I needed swipe for touch devices only so used custom min file and nothing was broken after that.
It really depends if you need jQuery.mobile or you need just a certain functionality, Widgets, events? Use custom version that you can build yourself.
You can make and download yours here : http://jquerymobile.com/download-builder/
I hope it worked for you too guys!

jQuery Mobile - Manipulating the DOM - Refreshing a page

This whole jQuery mobile dynamic data (pulling data from the server) is driving me nuts. Why should it be this difficult to manipulate the DOM and the refresh the page?
I have my page:
<div data-role="page" id="intranet-holidays" data-title="HOLIDAYS" data-add-back-btn="true"></div>
In document.ready I have the following:
$( document ).delegate( "#intranet-holidays", "pagebeforecreate", function() {
$('body').addClass('ui-loading');
$.mobile.loadingMessage = "Loading Holidays...";
$.mobile.showPageLoadingMsg();
// calls getJSON to retrieve data from the web server
loadHolidays();
});
When my data returns back from the server I add collapsible DIVs into my page (intranet-holidays).
Inside of the collapsible DIVs I have some ULs.
I know my syntax is correct because I can grab the generated HTML, save it to a file, then display that file and it all shows correctly. Here is a screen shot:
Here is what my dynamically loaded page looks like (not what I want):
I know that I can refresh a listview with the following:
$('#list').listview('refresh');
That works great for a list.
How do I refresh the page (that contains collapsible DIVs and those collapsible DIVs contains ULs)?
Yes, I want all the data in the page to be dynamic.
In the success handler method of the AJAX call that fetches the JSON data,add $('#intranet-holidays').trigger('create'); after you create the lists.
Try:
$('#page').trigger('create');
Or read:
http://www.elijahmanor.com/2011/02/dynamically-appending-elements-to.html

jQuery Mobile Page refresh mechanism

I'm having a lot of pain understanding how jQuery Mobile handles pages refresh after an ajax update.
I'm having a two pages - unique file site: a search engine.
First page is a search field. Submit triggers a JSON call and parser which updates the second page: results.
for now i'm using: $.mobile.changePage( $('#result') ); which does the job great from search field to result page.
However:
If I reuse it from result page for next/prev pages ( new json call, new parse, new added nodes in the DOM );
Jquery Mobile just don't "paint" the newly added nodes.
can anyone explain, please the use and distinction of
1- $.mobile.page()
2- $.mobile.changePage()
3- $.mobile.refresh()
or give me a hint on how I should handle page changes.
thanks!
function refreshPage()
{
jQuery.mobile.changePage(window.location.href, {
allowSamePageTransition: true,
transition: 'none',
reloadPage: true
});
}
Taken from here http://scottwb.com/blog/2012/06/29/reload-the-same-page-without-blinking-on-jquery-mobile/ also tested on jQuery Mobile 1.2.0
Please take a good look here: http://jquerymobile.com/test/docs/api/methods.html
$.mobile.changePage() is to change from one page to another, and the parameter can be a url or a page object. ( only #result will also work )
$.mobile.page() isn't recommended anymore, please use .trigger( "create"), see also: JQuery Mobile .page() function causes infinite loop?
Important:
Create vs. refresh: An important distinction
Note that there is an important difference between the create event and refresh method that some widgets have. The create event is suited for enhancing raw markup that contains one or more widgets. The refresh method that some widgets have should be used on existing (already enhanced) widgets that have been manipulated programmatically and need the UI be updated to match.
For example, if you had a page where you dynamically appended a new unordered list with data-role=listview attribute after page creation, triggering create on a parent element of that list would transform it into a listview styled widget. If more list items were then programmatically added, calling the listview’s refresh method would update just those new list items to the enhanced state and leave the existing list items untouched.
$.mobile.refresh() doesn't exist i guess
So what are you using for your results? A listview? Then you can update it by doing:
$('ul').listview('refresh');
Example:
http://operationmobile.com/dont-forget-to-call-refresh-when-adding-items-to-your-jquery-mobile-list/
Otherwise you can do:
$('#result').live("pageinit", function(){ // or pageshow
// your dom manipulations here
});
I posted that in jQuery forums (I hope it can help):
Diving into the jQM code i've found this solution. I hope it can help other people:
To refresh a dynamically modified page:
function refreshPage(page){
// Page refresh
page.trigger('pagecreate');
page.listview('refresh');
}
It works even if you create new headers, navbars or footers. I've tested it with jQM 1.0.1.
I found this thread looking to create an ajax page refresh button with jQuery Mobile.
#sgissinger had the closest answer to what I was looking for, but it was outdated.
I updated for jQuery Mobile 1.4
function refreshPage() {
jQuery.mobile.pageContainer.pagecontainer('change', window.location.href, {
allowSamePageTransition: true,
transition: 'none',
reloadPage: true
// 'reload' parameter not working yet: //github.com/jquery/jquery-mobile/issues/7406
});
}
// Run it with .on
$(document).on( "click", '#refresh', function() {
refreshPage();
});
I solved this problem by using the the data-cache="false" attribute in the page div on the pages I wanted refreshed.
<div data-role="page" data-cache="false">
/*content goes here*/
</div>
In my case it was my shopping cart. If a customer added an item to their cart and then continued shopping and then added another item to their cart the cart page would not show the new item. Unless they refreshed the page. Setting data-cache to false instructs JQM not to cache that page as far as I understand.
Hope this helps others in the future.
This answer did the trick for me http://view.jquerymobile.com/master/demos/faq/injected-content-is-not-enhanced.php.
In the context of a multi-pages template, I modify the content of a <div id="foo">...</div> in a Javascript 'pagebeforeshow' handler and trigger a refresh at the end of the script:
$(document).bind("pagebeforeshow", function(event,pdata) {
var parsedUrl = $.mobile.path.parseUrl( location.href );
switch ( parsedUrl.hash ) {
case "#p_02":
... some modifications of the content of the <div> here ...
$("#foo").trigger("create");
break;
}
});

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