Why use data-role="navbar" in jQuery mobile - jquery-mobile

I'm using jQuery mobile to build a simple web app and I want to add a navigation bar common to all pages.
I've found this great example, which led me to this question: do I really need the attribute data-role="navbar"?
Because it adds unnecessary html and css to my code, obligating me to override all these unnecessary styles.
Thank you

I haven't seen the need for data-role="navbar". This page here might help: jQuery Mobile Data Attributes.
It looks like it might only be needed for styling.

Related

How to use multiple files with phonegap jquery mobile app

I am starting a jquery mobile/phonegap application. And would like to know if there is any way I can keep my code in seperate files so it is easier to manage. From all the reading I have done on jquery mobile it looks like all of your pages are in one file and are just seperated by divs like <div data-role="page" id="page-one"></div>. I guess I could try to make some type of a makefile that concatenated them all together, but it seems that most apps are pretty lengthy that they should have a solution for this. Keeping all the code in one file just seems impossible to maintain.
JQuery demo, three pages, all one source file:
http://demos.jquerymobile.com/1.1.0/docs/pages/multipage-template.html
You can just use normal links with jQuery mobile:
http://demos.jquerymobile.com/1.4.0/navigation/
It will "hijack" the link and use transitions to give you a native like animation. As Flatlineato pointed out you need to make each page confirm to the required markup, and you'll need to repeat your headers/footers etc on each included page.
Or you can use more complex solutions to dynamically change the content of your page, which can be stored in multiple files, like this other SO post:
including the header and footer in jquery mobile multiple page site
But I would also agree with Leo and say the jQuery mobile isn't the best choice for Phonegap, it's not that well optimized, and runs slower in the Phonegap webkit view than it does in native safari.
I've also switched to a custom navigation system and dropped jQM early on in my Phonegap development, but that was over a year ago, more recent versions may work better.
I think my personal API is what you are searching for:
https://github.com/charnekin/api
Demo example:
http://yopo.es/cordovapi/
jQuery Mobile allows you to have the pages in separate files. Obviously in each file must conform to the structure of the markup pages.
To point to another page in the link instead of the id you specify the correct file name. If the file then you enter multiple jquery mobile pages must also specify the id.

How to properly replace jquery mobile pages in the DOM

I am using jquery mobile and custom i18n functionality. When the user changes the language from the settings I want to remove the existing pages and put them again into the DOM (I am using Handlebars.js so the new pages will be shown in the new language).
What is the proper way to accomplish this? Simply removing the pages with .remove() and then appending them to the DOM is definitely not the way to go - the history gets broken, the pages don't get enhanced and I'm not even sure if it is possible to change the current page this way.
Is this even possible or should I consider refactoring my i18n so it doesn't require refreshing the whole DOM?

jQuery Mobile and Knockout.js Issues

Ive read alot about jQuery Mobile and Knockout.js not playing nice together. Should I ditch knockout.js for my mobile pages and stick with jquery mobiles javascript to handle my view updates? Is there a better option?
They work fine together. You will need to manually invoke jquery mobile's various widget methods if you are dynamically generating markup with ko's templating or if you are manipulating CSS or other properties. Custom bindings are another valid approach.
$('#myButon').button('refresh');
$('#myListview').listview('refresh');
$("#myCheckboxList").checkboxradio("refresh");
If your markup is static other than text values, it should be no-brainer.
I just started a new project for mobile website, JQM and KO are combined, they are great frameworks and I've never seen any big issue with them.

Can I use Twitter Bootstrap and jQuery UI at the same time?

I am using Twitter Bootstrap and I want to use an "auto-suggest" which is not available in Bootstrap, whereas jQuery UI has its own methods for auto-suggest.
Can I use both? Will it overload the bandwidth?
Check out jquery-ui-bootstrap. From the README:
Twitter's Bootstrap was one of my favorite projects to come out of
2011, but having used it regularly it left me wanting two things:
The ability to work side-by-side with jQuery UI (something which
caused a number of widgets to break visually) The ability to theme
jQuery UI widgets using Bootstrap styles. Whilst I love jQuery UI, I
(like others) find some of the current themes to look a little dated.
My hope is that this theme provides a decent alternative for others
that feel the same. To clarify, this project doesn't aim or intend to
replace Twitter Bootstrap. It merely provides a jQuery UI-compatible
theme inspired by Bootstrap's design. It also provides a version of
Bootstrap CSS with a few (minor) sections commented out which enable
the theme to work along-side it.
just to update this, bootstrap v2 no longer conflicts with jquery ui
https://github.com/twbs/bootstrap/issues/171
Edit: as #Freshblood there are a few things that still conflict. However, as originally posted Twitter suggests that they are working on this and it largely works, specially compared to v1.
For future reference (since this is google's top answer ATM), to prevent jQuery UI from overriding bootstrap's or your custom style, you need to create a custom download and select the no-theme theme. That will only include jQuery UI's resets, and not overload bootstrap's style for various elements.
While we're at it, some jQuery UI components (such as datepicker) have a native bootstrap implementation. The native bootstrap implementations will use the bootstrap css classes, attributes and layouts, so should have a better integration with the rest of the framework.
In my limited experience I am coming across issues as well. It appears that JQuery elements (such as buttons) can be styled using bootstrap CSS. However, I am experiencing issues having created a JQuery UI tab and wanting to lock a bootstrap only input (using the input-append class) to the bottom of each tab, only the first sits correctly. So, JQuery tabs + Bootstrap buttons = probably not.
Bootstrap still doesnt work with Jquery UI, for example the modal.Bootstrap has nice style but as a framework with Twitter behind isnt that good.
If you're running into javascript namespace collisions, you can use Bootstrap's noConflict() function make it cede functionality to jQuery UI.
Although this question specifically mentions jQuery-UI autosuggest feature, the question title is more general: does bootstrap 3 work with jQuery UI? I was having trouble with the jQUI datepicker (pop-up calendar) feature. I solved the datepicker problem and hope the solution will help with other jQUI/BS issues.
I had a difficult time today getting the latest jQueryUI (ver 1.12.1) datepicker to work with bootstrap 3.3.7. What was happening is that the calendar would display but it would not close.
Turned out to be a version problem with jQUI and BS. I was using the latest version of Bootstrap, and found that I had to downgrade to these versions of jQUI and jQuery:
jQueryUI - 1.9.2 (tested - works)
jQuery - 1.9.1 or 2.1.4 (tested - both work. Other vers may work, but these work.)
Bootstrap 3.3.7 (tested - works)
Because I wanted to use a custom theme, I also built a custom download of jQUI (removed a few things like all the interactions, dialog, progressbar and a few effects I don't use) -- and made sure to select "Cupertino" at the bottom as my theme.
I installed them thus:
<head>
...etc...
<link rel="stylesheet" href="css/font-awesome.min.css">
<link rel="stylesheet" href="css/cupertino/jquery-ui-1.9.2.custom.min.css">
<link rel="stylesheet" href="css/bootstrap-3.3.7.min.css">
<!-- <script src="js/jquery-1.9.1.min.js"></script> -->
<script src="js/jquery-2.1.4.min.js"></script>
<script src="js/jquery-ui-1.9.2.custom.min.js"></script>
<script src="js/bootstrap-3.3.7.min.js"></script>
...etc...
</head>
For those interested, the CSS folder looks like this:
[css]
- bootstrap-3.3.7.min.css
- font-awesome.min.css
- style.css
- [cupertino]
- jquery-ui-1.9.2.custom.min.css
[images]
- ui-bg_diagonals-thick_90_eeeeee_40x40.png
- ui-bg_glass_100_e4f1fb_1x400.png
- ui-bg_glass_50_3baae3_1x400.png
- ui-bg_glass_80_d7ebf9_1x400.png
- ui-bg_highlight-hard_100_f2f5f7_1x100.png
- etc (8 more files that were in the downloaded jQUI zip file)
If don't store it locally and use the link that they provide you might have an improved performance.The client might have the scripts already cached in some cases. As for the case of jQueryUI i would recommend not loading it until necessary.
They are both minimized, but you can fire up the console and look at the network tab and see how long it takes for it to load, once it is initially downloaded it will be cached so you shouldn't worry afterwards.My conclusion would be yes use them both but use a CDN
Yes you can use both. js bootstrap from twitter is a collection of jquery plugins. There shohuldn't be any conflict with jQuery UI.
Regarding bandwidth overload, it really depends on how you handle the requests to load all of your js files. if you really dont want to make multiple requests to the server to request for each file, just append them together and minimize. Or you probably can get rid of some js bootstrap plugins you dont need. it is very modular.
Kendo UI has a nice bootstrap theme here and a set of web UI comparable to jquery-UI.
They also have an open source version that works nicely with the theme.
I have site developed using jquery ui, I just tried to plug in bootstrap for future development and styling but it breaks virtually everything.
So No they are not compatible.
Because this is the top result on google on jquery ui and bootstrap.js I decided to add this as community wiki.
I am using:
Bootstrap v3.2.0
jquery-2.1.0
jquery-ui-1.10.3
and somehow when I include bootstrap.js it disables the dropdown of the jquery ui autocomplete.
my three workarounds:
exclude bootstrap.js
or more to typeahead lib
move from bootstrap.js to bootstrap.min.js (strange, but worked for me)
The data-role="none" is the key to make them work together. You can apply to the elements you want bootstrap to touch but jquery mobile to ignore.
like this
input type="text" class="form-control" placeholder="Search" data-role="none"

jquery UI widgets without the CSS bloat

A question about jquery UI widgets. Is there a way to get them without all the bloat of CSS that they carry and render out ? I'm having a complete mess with tabs rendering all those jquery-ui-widget, jquery-ui-panel etc. etc. classes.
This guy here does it somehow
http://www.davereederdesign.com/post/2010/04/23/Tabs-with-Memory.aspx
?
He doesn't use the JQuery Tab widget.
I know this as an old post, but I'm having a similar problem applying UI widgets to an already very heavy website. If you inspected the widget in Firebug you might be able to only grab the rules that the widget uses and create a custom CSS file to apply to it. I'm going to try this when I'm back at work tomorrow and I'll report back on my progress.

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