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jQuery Mobile Web Development Essentials-Third Edition
jQuery Mobile Web Development Essentials-Third Edition

jQuery Mobile Web Development Essentials-Third Edition: Build a powerful and practical jQuery-based framework in order to create mobile-optimized websites , Third Edition

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Arrow left icon
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jQuery Mobile Web Development Essentials-Third Edition

Chapter 2. Working with jQuery Mobile Pages

In the previous chapter, you saw how easy it was to add jQuery Mobile to a simple HTML page. While it would be nice if every website consisted of one and only one page, real websites consist of multiple pages connected via links. jQuery Mobile makes it easy to work with multiple pages and provides many different ways to create and link them.

In this chapter, we will be covering the following topics:

  • Adding multiple pages to one jQuery Mobile file
  • How links are modified by jQuery Mobile (and how to disable it)
  • How additional files can be linked and added to a jQuery Mobile website
  • How jQuery Mobile automatically handles URLs to allow for easy bookmarking

Important preliminary points

As mentioned in the previous chapter, all of the code from this chapter is available via the ZIP file downloaded at GitHub.

Starting with this chapter, we will be presenting only the most relevant parts of each code listing. The first code listing will typically include all the code, while the later listings will focus on the important sections. Be sure to reference the complete code listings available via the downloaded ZIP file.

Adding multiple pages to one file

In the previous chapter, we worked on a file that had a simple page of text. For our first modification, we're going to add another page to the file and create a link to it. If you remember, jQuery Mobile looks for a particular <div> wrapper to help it know where your page is: <div data-role="page">. What makes jQuery Mobile so simple to use is that we can add another page by simply adding another div using the same format. The code snippet Listing 2-1 shows a simple example of this feature:

Listing 2-1: test1.html
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Multi Page Example</title>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.css" />
<script type="text/javascript" src="http://code.jquery.com/jquery-2.1.3.min.js">&lt...

jQuery Mobile, links, and you

When jQuery Mobile encounters a simple link (<a href="something.html">Foo</a>), it will automatically capture any clicks on that link and change it to an AJAX-based load. This means that if it detects that the target is something on the same page, that is, the hashmark style (href="#foo") links we used in the previous code, it will handle transitioning the user to a new page. If it detects a page to another file on the same server, it will use AJAX to load the page and replace the currently visible one.

If you link to an external website, then jQuery Mobile will leave the link as it is and the normal link behavior will occur. There may be times when you may want to disable jQuery Mobile from doing anything with your links at all. In this case, you can make use of a data attribute that lets the framework know it shouldn't do anything at all. Here is an example:

<a href="foo.html" data-ajax="false"&gt...

Working with multiple files

In an ideal world, we could build an entire website with one file. We would never have to perform revisions, and we would be done with every project by 2 P.M. on Fridays. But in the real world, we have to deal with lots of files, lots of revisions, and, unfortunately, lots of work. In the earlier code listing, you saw how we could include two pages within one file. jQuery Mobile handles this easily enough. But you can imagine that this would get unwieldy after a while. While we could include 10, 20, or even 30 pages, this will make the file difficult to work with and make the initial download for the user that much slower.

To work with multiple pages and files, all we need to do is make a simple link to other files in the same domain as our first file. We can even combine the first technique (two pages in one file) with links to the other files. In listing 2-2, we've modified the first example to add a link to a new page (as mentioned previously, we are only...

jQuery Mobile and URLs

If you've opened test2.html in your browser and played with it, you may have noticed something interesting about the URLs as you navigate. The following is the initial http://localhost/mobile/c2/test2.html URL (the address and folder will, of course, differ on your computer).

After clicking on Products, the URL will change to http://localhost/mobile/c2/products.html. If I click on back and click on learn more, I will get http://localhost/mobile/c2/test2.html#aboutPage.

In both the subpages (the Products page and the About page), the URL was changed by the framework itself. The framework uses history.pushState and history.replaceState in the browsers that support it. For older browsers, or browsers that don't support JavaScript manipulation of the URL, hash-based navigation is used instead. The http://localhost/mobile/c2/test2.html#/mobile/c2/products.html URL is an example of how this link would look.

What's interesting is that, in this bookmark style...

Additional customization

Working with multiple pages in jQuery Mobile is pretty simple. You could take what's been discussed in the first two chapters and build a pretty simple, but mobile-compliant, website right now. The following are a few more interesting tricks you may want to consider.

Page titles

You may have noticed that when you clicked on the Products page in the previous example, the title of the browser correctly updated to Products. This is because jQuery Mobile noticed, and parsed in, the title tag from the products.html file. If you click on the learn more link, you will notice that the title is also updated. How did this work? When aboutPage was loaded, jQuery Mobile used the header tag's content (All About Megacorp) for a title. You can override this by providing an additional argument to your div tag defining your page: data-title. The following snippet demonstrates this feature:

<div data-role="page" id="aboutPage" data-title="All About...

Summary

This chapter further fleshed out the concept of jQuery Mobile pages and how to work with multiple pages. Specifically, we saw how one physical file can contain many different pages. jQuery Mobile will handle hiding all but the first page. We also saw how you can link to other pages and how jQuery Mobile uses AJAX to dynamically load the content into the browser. Next, we discussed how jQuery Mobile handles updating the URL of the browser in order to enable bookmarking. Finally, we discussed two utilities that will help to improve your page. The first way was to provide a title for embedded pages. The second technique demonstrated how to prefetch content to further improve the experience of the users visiting your website.

In the next chapter, we'll take a look at headers, footers, and navbars. These will greatly enhance our pages and make them easier to navigate.

Left arrow icon Right arrow icon

Key benefits

  • Build websites with jQuery Mobile that work beautifully across a wide range of mobile devices
  • Become a competent jQuery Mobile developer and learn the building blocks of jQuery Mobile’s component-driven design
  • This book covers key concepts but with a focus on providing the practical skills required

Description

jQuery Mobile is a HTML5-based touch-optimized web framework. jQuery Mobile can be used to build responsive cross-platform websites and apps for a wide range of smartphones, tablets, and desktop devices. The jQuery Mobile framework can be integrated with other mobile app frameworks such as PhoneGap, IBM Worklight, and more. Introduction to jQuery Mobile explains how to add the framework to your HTML pages to create rich, mobile-optimized web pages with minimal effort. You’ll learn how to use jQuery Mobile’s automatic enhancements and configure the framework for customized, powerful mobile-friendly websites. We then dig into forms, events, and styling. You'll see how jQuery Mobile automatically enhances content, and will find out how to use the JavaScript API to build complex sites. We’ll introduce you to how jQuery Mobile can be themed as well looking into how JavaScript can be used for deep sets of customizations. The examples are ready to run and can be used to help kick-start your own site. Along the way, you will leverage all the concepts you learn to build three sample mobile applications.

Who is this book for?

This book is for any web developer who is looking to create mobile-optimized websites. Basic knowledge of HTML is required. Minor familiarity with JavaScript would help but is not required.

What you will learn

  • * Create mobile-optimized sites using simple HTML
  • * Structure your sites so users can browse them on mobile devices
  • * Find out how to work with multiple pages in the JQM framework and embed multiple pages in HTML files
  • * Enhance simple pages using various toolbars
  • * Include mobile-optimized forms for interactive sites
  • * Convert desktop sites into mobile versions
  • * Use HTML5's local storage feature in jQuery Mobile to include persistent client-side storage
  • * Explore the rich sets of widgets and themes available and discover how to modify them for use in your jQuery Mobile site
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Table of Contents

14 Chapters
1. Preparing Your First jQuery Mobile Project Chevron down icon Chevron up icon
2. Working with jQuery Mobile Pages Chevron down icon Chevron up icon
3. Enhancing Pages with Headers, Footers, and Toolbars Chevron down icon Chevron up icon
4. Working with Lists Chevron down icon Chevron up icon
5. Getting Practical – Building a Simple Hotel Mobile Website Chevron down icon Chevron up icon
6. Working with Forms and jQuery Mobile Chevron down icon Chevron up icon
7. Creating Grids, Panels, and Other Widgets Chevron down icon Chevron up icon
8. Moving Further with the Notekeeper Mobile Application Chevron down icon Chevron up icon
9. jQuery Mobile Configuration, Utilities, and JavaScript Methods Chevron down icon Chevron up icon
10. Working with Events Chevron down icon Chevron up icon
11. Enhancing jQuery Mobile Chevron down icon Chevron up icon
12. Creating Native Applications Chevron down icon Chevron up icon
13. Becoming an Expert – Building an RSS Reader Application Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

Rating distribution
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(1 Ratings)
5 star 0%
4 star 0%
3 star 100%
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Mark Shackelford Apr 16, 2019
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
This is OK as an introduction to the possibilities of JQuery Mobile, but is NOT in any way a developer's guide.You get an overview of some of the simpler things that can be done, which I found fine when I was starting out, but soon gave up using the book and relied on Dr. Google and the somewhat more useful JQuery blogs etc
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