Javascript

Download Beginning iOS Application Development with HTML and by Richard Wagner PDF

Posted On March 3, 2017 at 1:01 pm by / Comments Off on Download Beginning iOS Application Development with HTML and by Richard Wagner PDF

By Richard Wagner

Web builders with HTML/JS abilities will fast discover ways to observe them to the iPhone/iPad platform
Beginning to intermediate net builders who are looking to observe their present HTML/CSS/JS/Ajax talents to the wildly well known iPhone/iPad OS will love this ebook. within the hugely winning Wrox starting layout, it allows builders who be aware of those middle applied sciences to take advantage of what they already understand and wake up to hurry quick. It introduces iOS improvement with net applied sciences, explains easy methods to permit and optimize sites for the iPhone and iPad, explores consumer interface layout, then strikes into animation, lighting tricks, development with internet frameworks, and lots more and plenty more.* Teaches you to use your wisdom of HMTL, JavaScript, and similar internet applied sciences to the iOS platform and create apps for the iPad and iPhone* Explains tips to permit and optimize websites for the cellular reveal, layout a good iPad and iPhone UI, and practice CSS* Covers development in interactivity, animation, and lighting tricks, programming the canvas, offline, apps, bandwidth functionality and optimization, and net frameworks* indicates you the way to package deal your app inside of a local iOS wrapper (no programming required) so that you can publish your apps to the App shop
Developers who already recognize HTML and JavaScript can wake up to hurry on iOS app improvement extra speedy with the aid of this Wrox guide.

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Extra resources for Beginning iOS Application Development with HTML and JavaScript

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Indd 32 12/21/11 3:36:06 PM Scripting JavaScript ❘ 33 In this example, the code block loops as long as num is less than 100. However, suppose that num has the value of 101; the while code block is never executed. The do/while loop is similar except that the condition evaluates at the end of the loop instead of at the start. Here’s the basic structure: do { // statement } while (expression) In real-world practice, while loops are used more often than do/while loops. Comments As in HTML or other languages, you can add your own comments to your JavaScript code.

In addition, Safari on iOS provides only a limited number of settings that users can configure. As Figure 1-2 shows, users can turn off and on support for JavaScript, plug-ins, and a pop-up blocker. Users can also choose whether they want to always accept cookies, accept cookies only from sites they visit, or never accept cookies. A user can also manually clear the history, cookies, and cache from this screen. FIGURE 1-1 Quite obviously, native apps and Web apps are not identical to each other — both from developer and end-user standpoints.

However, as an application developer, you want to manage what types of gestures your application supports. Some of the gestures that are used for browsing websites (such as the double-tap zoom) are actually not something you normally want to support inside of an iOS web app. Table 1-2 displays the gestures that are supported on iOS as well as an indication as to whether this type of gesture should be supported on a website or full web application. indd 9 12/22/11 8:48:58 AM 10 ❘ CHAPTER 1 INTRODUCING IOS DEVELOPMENT USING WEB TECHNOLOGIES TABLE 1-2 (continued) GESTURE RESULT WEB SITE APP Double-tap Zooms in and centers a block of content Yes No Pinch open Zooms in on content Yes No Pinch close Zooms out to display more of a page Yes No Touch and hold Displays an info bubble Yes No Two-finger scroll Scrolls up and down an iframe or element with CSS overflow:auto property Yes Yes LIMITATIONS AND CONSTRAINTS Because iPhone, iPad, and iPod touch are mobile devices, they are obviously going to have resource constraints that you need to be fully aware of as you develop applications.

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