I have a asp.net website with some header links in master page. For some of them I added link to jQuery mobile script to format those specific pages (forms) to look good on phones/tablets.
But after I load one of those pages and then click on some other page, it somehow caches the current page and although I can see the correct page being loaded for split second, it then reloads previous page. I don't know why this happens, but I know that culprit is the jQm link, because if I remove it, it works like expected (without the mobile design though).
I don't use data-role="page" attribute or anything, just classic asp.net page.
jQuery Mobile uses it's own kind of navigation model by default. It injects multiple specifically formatted pages into current page using AJAX. You probably need to disable it using code snippet below:
$( document ).on( "mobileinit", function() {
$.mobile.ajaxEnabled = false;
});
For more information check jQuery Mobile documentation navigation model and global configuration pages.
Related
I would like to build the equivalent of a _layouts.cshtml page that I can use with every page in my web app. I don't want to use cshtml or razor though I want to use html. Is there a simple way to convert the _layouts page to standard html and then include it with the other pages in the app?
I have inherited an app that uses cshtml, with a _layouts page for menus and some content styling used on each page. I can duplicate the content on every page, but would prefer to have a generic solution for it. The client does not want to use cshtml pages. Any java library, such as AngularJS that would provide tools is ok for me to use. I'm not a front-end guy and this is a relatively low budget operation where I'm working for free. TIA.
i'm not familiar with .cshtml but on an html page you could use an iframe and update the contents of the iframe with different pages as needed.
you could also get external html and put it on the current page using jquery's get().
// get the contents of 'test.html' and put it into the 'result' element
// on the current page.
$.get("ajax/test.html", function(data) {
$(".result" ).html( data );
alert("Load was performed.");
});
I have a site that has multiple pages. The first page is just a listview with icons and links to the other pages. CSS stylesheets work fine on the first page, but when I go to one of the linked pages, my custom css stylesheet (and js for that matter), related to that page, is being ignored. If I look in the FF inspector I see that it has dropped the associated lines that tell it about my stylesheet. If I directly go to the desired page or if I hit refresh, the styles look fine, but whenever I come from a link off the first page, the styles are gone. I see no errors when loading the page. Is this a know issue? How can I force it to not ignore my stylesheets.
I am using jquery mobile 1.4.5 in addition to my own.
Looking further. It looks like hitting the link is appending the body of the 2nd page at the end of the first and not simply loading the 2nd page.
It turns out that by default links behave a little different than normal when using jQuery Mobile. The don't do a full page load, but instead only inject the part contained in a div marked with data-role="page". I did not know this.
http://demos.jquerymobile.com/1.1.1/docs/pages/page-links.html
I am a newbie to JQM (I use 1.4.5) and my webapp (asp.net C# apache Cordova) contains many separate pages of .cshtml (single-page template) only. I am testing my webapp on a Samsung Galaxy Grand using Android 4.2.2
A.
I am not sure about my understanding of 'linking pages', even after reading all the JQM docs on this and also after reading up many, many posts on this topic about passing querystring values to another page; mainly because I find that ALMOST ALL the examples are directed towards providing answers for internal pages (Multi-Page template) within a single html page.
So I request some of you JQM experts to confirm or correct the following understanding of mine....
From the JQM docs I understood that
I could use in any link (e.g button), href="page2.cshtml?par1=1&par2=2"; and JQM will automatically use Ajax for this link to work.
I also understood that use of querystring is always allowed in such cases of different html pages of the same domain and it will work via Ajax automatically ; so long as the attr such as rel="external", data-ajax="false" etc. are not used in the same link.
but querystrings are not allowed in case of the internal pages (multi-page template) only....;
and if I need to use the above href to link to a page in another domain e.g. www.anotherdomain.com/page2.cshtml?par1=1&par2=2, then I need to use rel="external".
Are all my above points (that reflect my understanding) CORRECT? KIndly confirm ro please correct me ...
B.
In my app, I find that most of the links work according to my understanding as above, to connect to different pages in the same domain; and I assume it happens via Ajax. Is it correct? I am also able to use the querystring params in page2 ( i.e. To-Page).
But in one case, though it works, in the To-Page the Panel features do not operate correctly, unless I introduce rel="external' in the href link !!! I suppose it means it IS NOT AJAX anymore? Also I am unable to find the reason..
Further independent of the above topic, I face another issue. The loading time (i.e. Time taken to display the To-Page) varies.
Mostly it is OK, but at times the loading-circle goes on forever.... and I presume it has crashed....??? then If I go back using the back button and come forward again, many times it loads immediately...!!!!!
Any thoughts or suggestions.....?
Thanks in anticipation...
Ratna
Before you can worry about how to pass attributes from one page to another you need to understand the difference between multi-page and multi-HTML templates.
Multi HTML page template
Smaller and lighter, each data-role=”page” is inside a separate HTML file and page structure is much more modular.
Can become even smaller if every subsequent HTML page is stripped from HEAD content, or anything that isn’t data-role=”page” div. Unfortunately in this case fallback if JavaScript is not supported is out of question.
DOM size is relatively small, only first page is permanently loaded into the DOM, any other page will also be loaded into the DOM but at the same time it will also be removed when not used actively, basically each time you move from it.
Better fallback if JavaScript is not supported. Works great in desktop browsers after a page refresh, mainly because every HTML page has an existing HEAD content. This also allows your app to behave like normal web app mainly because AJAX can be turned off.
Multipage template
Since all pages are already loaded, no additional requests are generated for navigating between pages.
First load is slower as the file size is larger, but subsequent page navigation is fast, thus making transitions much more smooth. Almost native-like smooth, emphasize on almost.
Suitable for relatively smaller applications and situations where you know the capabilities of your target platforms including presence of JavaScript support, thus making it a great solution for a hybrid app. It works much better as a Phonegap app then multi HTML template.
The “page” data-role element is required.
More about this topic can be found here: Multipage template vs Multi HTML template in jQuery Mobile
Now let's talk about how to properly pass data between jQuery Mobile pages.
jQuery Mobile uses AJAX by default
You can turn off AJAX using rel="external"
If you turn off AJAX you will lose almost everything good about jQuery Mobile, including animations. So if you don't want AJAX page handling better find some other responsive framework like Bootstrap or Foundation.
If you don't want to use AJAX you can still use querystrings but inside a href or via changePage function.
Better querystrings alternatives:
Global object.
If you're using AJAX you can simply use a global object(s) to store all of your data.
Something like this:
// Store object
var storeObject = {
parameter1: null,
parameter2 : null
}
Access data from the previous page
Again if you're using AJAX you don't need to pass any data because all that data is till in the DOM.
// Store object
$(document).on('pagebeforeshow', '#second', function(e, data){
alert("My name is " + data.prevPage.find('#test-input').val());
});
Localstorage or Sessionstorage
This solution will work no matter if you use AJAX or not.
$(document).on('pagebeforeshow', '#index', function(){
$(document).on('click', '#change-page-button', function(){
// store some data
if(typeof(Storage)!=="undefined") {
localStorage.firstname="Dragan";
localStorage.lastname="Gaic";
}
// Change page
$.mobile.changePage("#second");
});
});
$(document).on('pagebeforeshow', '#second', function(){
alert('My name is ' + localStorage.firstname + ' ' + localStorage.lastname);
// Lets change localStorage data before we go to the next page
localStorage.firstname="NewFirstNeme";
localStorage.lastname="NewLastName";
});
$(document).on('pagebeforeshow', '#third', function(){
alert('My name is ' + localStorage.firstname + ' ' + localStorage.lastname);
});
Send data through changePage function or via href
// Send
$.mobile.changePage('page2.html', { dataUrl : "page2.html?paremeter=123", data : { 'paremeter' : '123' }, reloadPage : true, changeHash : true});
or
Send parameter
receive that same data:
$(document).on('pagebeforeshow', "#index", function (event, data) {
var parameters = $(this).data("url").split("?")[1];;
parameter = parameters.replace("parameter=","");
alert(parameter);
});
If you need more information about this solutions including working examples find them here: Passing data between jQuery Mobile pages
Several methods mentioned here are deprecated (still usable) in the version 1.4. Though you don't need to worry about that, almost everything here will be unusable in version 1.5. This new version will overhaul jQuery Mobile from the bottom to the top.
Update
Yes, you can use any such link and jQuery Mobile will use AJAX. If you take a look at my previous examples you will find a working one.
If you want AJAX you CAN'T use rel="external", data-ajax="false" though stringquerys will work in bot cases.
Correct they will only work in multi-HTML template. Though there used to be a 3rd party plugin that allowed this to work with multi-page template but I don't think it works with newer jQuery Mobile versions.
Correct, if you want to link external page you need to use rel="external".
I want to apply css to google calender iframe. I had tried with Jquery but it gives JavaScript security error. However I also tried this link
Got success but many of its links goes to 404 page as it takes my domain as base URL
You will face a security error when you apply css using javascript to an iframe that contains a page in a different domain. but this problem has a workaround by using document.domain if both documents are on the same top level domain, are using the same protocol & you can add the following line of JavaScript to the page in the iframe:
document.domain = "example.com";
the page containing the iframe needs the same line to make the domains match. Once this is in place, the script running on your main page is allowed to access properties of the document in the iframe element –
You cannot apply css to a iFrame ...
An iframe is a 'hole' in your page that displays another web page
inside of it. The contents of the iframe is not in any shape or form
part of your parent page.
From here
The reason behind that is security. If you have blabla.com in one
window and gmail.com in another one, then you’d not want a script from
blabla.com to access or modify your mail or run actions in context of
gmail on your behalf.
From here
If the iFrame is on the same domain and it doesnt violate the "Same-origin policy", you can work around this situation like this:
$('iframe').load( function() {
$('iframe').contents().find("head")
.append($("<style type='text/css'> .my-class{display:none;} </style>"));
});
Solution posted here
Anyway, if you are not violating the "Same-orgin policy", you probably don't want to use an iFrame.
I have a site which is using DNN (DotNetNuke) as a content management system. I am using another site for my event registrations. I have sent them my template; which displays the basics including a hover menu with many different items in it.
Issue is - as I update the menu on my site using DNN, I need it to be reflected on the site using my template - without me having to send them a new file. Anyone have suggetsions on how to approach this?
I don't want to send the events provider all of the DNN DLLs as well as my database login information in order to render the menu.
I created a page on my site that is something like 'menu.aspx' - this produces the menu in HTML format, however it has tags like in it that I'd like to remove before serving it to them.
What is the best approach for this? Do I need to write a custom server control using XMLHttp? Can I accomplish this in Javascript?
Any advice much appreciated.
Thank you!
If both sites are hosted on the same domain (eg site1.domain.com and site2.domain.com) you can use JavaScript and XmlHttpRequest to insert code from one site to another. Otherwise, the Same Origin Policy prevents you from using AJAX.
If they're not on the same domain but you have access to the page on their website, you can simply include there a JS script from your site :
<script type="text/javascript" src="http://yoursite.com/code.js"></script>
In the JS, simply document.write() what you want on the page. This way, you can easily change the content of the page on their site without having to send them a new file.
Finally, you can also use an iframe on their site, pointing to a page on yours.
EDIT: As Vincent E. pointed out, this will only work if they're on the same domain - my bad.
If you are unwilling or unable to use frames, then I would set up an ashx on your DNN server which renders the menu (if you've got it in a user control all the better, as you can just instatiate it and Render it directly to the output stream) and then just make an Ajax call to that from your events page and insert it directly into the DOM.
Here's a quick and hacky jquery-based example of the events page end of things:
<script type="text/javascript">
function RenderMenu(data)
{
$('#Menu').html(data);
}
$(document).ready(function() {
$.ajax({
type : 'GET',
url : 'http://localhost/AjaxHandlers/Menu.ashx',
data : '',
success : RenderMenu,
});
});
</script>
You'll want an empty div with the ID 'Menu' on the page where you want your menu to sit, but apart from that you're good to go.
If for whatever reason you can't get the menu HTML in an isolated way, then you'll need to do some text processing in RenderMenu, but it's still do-able.
I am not a web expert, so don't shoot me.
Can't you just put their registration form into an iFrame in DNN ?