Download HTML5 and JavaScript Web Apps by Wesley Hales PDF

By Wesley Hales

This hands-on ebook indicates you the way to paintings with HTML5, JavaScript MVC frameworks, and the newest W3C standards to construct cellular and computer net apps which are extensively supported throughout all browsers and units. You’ll quick grasp construction client-side purposes with a loosely coupled backend infrastructure that helps offline clients.

Learn how you can contain net garage, net employees, geolocation, machine Orientation, and WebSockets into your software structure, utilizing real-world examples. If you’re conversant in server-side programming and comprehend the fundamentals of HTML5, this publication is for you.
* gather a coherent architectural entire from HTML5’s advanced choice of elements
* achieve a transparent realizing of client-side structure and the “mobile first” process
* layout, create, and track crowd pleasing and powerful cellular internet apps
* discover how the pinnacle 5 JavaScript MVC frameworks have interaction with the server
* research most sensible practices for developing a uncooked WebSocket server
* research how websites reminiscent of Google, Twitter, and Amazon shop information
* Use real-world equipment for employing geolocation, and research the pitfalls of varied implementations
* approach photos and different info within the history with net staff

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Extra info for HTML5 and JavaScript Web Apps

Sample text

X. 22 | Chapter 3: Building for the Mobile Web Interactions and Transitions Take a look at three of the most common user-interaction approaches when developing a mobile web app: slide, flip, and rotation effects. First, we’ll dissect the slide, flip, and rotation transitions and how they’re accelerated. Notice how each animation requires only three or four lines of CSS and JavaScript. The examples don’t use any additional frameworks, only DOM and vendor prefixed APIs. org/example. The demo is built for a mobile device, so fire up an emulator, use your phone or tablet, or reduce the size of your browser window to 1024px or less.

Keep in mind the measurement is operations per second, so higher scores are better. Fetching and Caching | 41 Figure 3-11. HTML5 iframe versus innerHTML() performance 42 | Chapter 3: Building for the Mobile Web Network Type Detection and Handling Now that we have the ability to buffer (or predictive cache) the example web app, we must provide the proper connection detection features to make the app smarter. This is where mobile app development gets extremely sensitive to online/offline modes and connection speed.

CoreAnimation debug session (enlarged screen) Fetching and Caching Now it’s time to take your page and resource caching to the next level. Much like the approach that jQuery Mobile and similar frameworks use, you can prefetch and cache your pages with concurrent AJAX calls. A few core mobile web challenges highlight the reasons why following this approach makes sense: Fetching Prefetching your pages allows users to take the app offline and also eliminates wait‐ ing between navigation actions. Of course, you don’t want to choke the device’s bandwidth when the device comes online, so you need to use this feature sparingly.

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