A Beginner's Guide to Using the Application Cache Introduction It's becoming increasingly important for web-based applications to be accessible offline. Yes, all browsers can cache pages and resources for long periods if told to do so, but the browser can kick individual items out of the cache at any point to make room for other things. HTML5 addresses some of the annoyances of being offline with the ApplicationCache interface. Using the cache interface gives your application three advantages: Offline browsing - users can navigate your full site when they're offline Speed - resources come straight from disk, no trip to the network. The Application Cache (or AppCache) allows a developer to specify which files the browser should cache and make available to offline users. The cache manifest file The cache manifest file is a simple text file that lists the resources the browser should cache for offline access. Referencing a manifest file To enable the application cache for an app, include the manifest attribute on the document's html tag:
Five Things You Should Know About HTML5 You are here: Home Dive Into HTML5 1. It’s not one big thing You may well ask: “How can I start using HTML5 if older browsers don’t support it?” You may think of HTML as tags and angle brackets. Chapter 2 and Appendix A will teach you how to properly detect support for each new HTML5 feature. 2. Love it or hate it, you can’t deny that HTML 4 is the most successful markup format ever. Now, if you want to improve your web applications, you’ve come to the right place. Read all the gory details about HTML5 forms in Chapter 9. 3. “Upgrading” to HTML5 can be as simple as changing your doctype. Upgrading to the HTML5 doctype won’t break your existing markup, because obsolete elements previously defined in HTML 4 will still render in HTML5. 4. Whether you want to draw on a canvas, play video, design better forms, or build web applications that work offline, you’ll find that HTML5 is already well-supported. Each chapter of this book includes the all-too-familiar browser compatibility charts. 5.
JSbooks - free javascript books Dive Into HTML5 Como cotizar una prestación de servicios? Descargar Original ¿Como cotizar una prestación actividad de servicios? Parece un tema muy complicado y de mayor importancia según lo que resalte de las diferentes charlas o seminarios de diseñadores en las cuales participé. Aquí voy a darles unas pautas teóricas que les permitirá aclarar sus dudas. Primer paso, tomar conciencia que de cualquier manera que usted esta trabajando (en una oficina o en la cocina de la casa, solo o con un equipo), usted esta manejando una empresa para generar ganancias, reinvertirlas y crecer lo que se diferencia del auto-empleo que sirve para vivir día a día. Si tienen dudas respecto a eso, no vayan mas lejos, no sirve complicarse la vida en hacer cálculos..... Ahora empezamos, Una empresa genera ganancias cuando cubre todos sus costos de funcionamiento. Se entiende por punto de equilibrio, punto muerto o umbral de rentabilidad, aquella cifra de ventas en que la empresa ni pierde, ni gana; es decir, cuando la empresa cubre únicamente todos sus gastos. Entonces,
Getting Started Most webmasters are familiar with HTML tags on their pages. Usually, HTML tags tell the browser how to display the information included in the tag. For example, <h1>Avatar</h1> tells the browser to display the text string "Avatar" in a heading 1 format. However, the HTML tag doesn't give any information about what that text string means—"Avatar" could refer to the hugely successful 3D movie, or it could refer to a type of profile picture—and this can make it more difficult for search engines to intelligently display relevant content to a user. Schema.org provides a collection of shared vocabularies webmasters can use to mark up their pages in ways that can be understood by the major search engines: Google, Microsoft, Yandex and Yahoo! 1. 1a. Your web pages have an underlying meaning that people understand when they read the web pages. 1b. itemscope and itemtype Let's start with a concrete example. To begin, identify the section of the page that is "about" the movie Avatar. Back to top 1d.
Initializr - Start an HTML5 Boilerplate project in 15 seconds! JavaScript JavaScript (JS) is a lightweight interpreted (or just-in-time compiled) programming language with first-class functions. While it is most well-known as the scripting language for Web pages, many non-browser environments also use it, such as Node.js, Apache CouchDB and Adobe Acrobat. JavaScript is a prototype-based, garbage-collected, dynamic language, supporting multiple paradigms such as imperative, functional, and object-oriented. JavaScript's dynamic capabilities include runtime object construction, variable parameter lists, function variables, dynamic script creation (via eval), object introspection (via for...in and Object utilities), and source-code recovery (JavaScript functions store their source text and can be retrieved through toString()). This section is dedicated to the JavaScript language itself, and not the parts that are specific to Web pages or other host environments. For information about APIs that are specific to Web pages, please see Web APIs and DOM.
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