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HTML

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Common HTML Tags

The following table lists some of the most common HTML tags that you'll use to build your website. After you've worked in HTML for a little while, these tags will become second nature to you. [more…]

HTML References and Resources

You can't go on the Internet without seeing HTML in action, but the Internet is a great place for finding out about HTML, too. The following table lists some valuable online resources for more information [more…]

HTML5 and JavaScript Selection Options

Of the many new features in HTML5, the innovations with the most far-reaching potential are in the additions to JavaScript available in modern browsers. JavaScript is usually used to interact with the [more…]

How to Set Up an HTML5 Web Page for Offline Cache

Most Web-based applications work only if you're online, which makes a certain kind of sense. But HTML5 has a mechanism for forcing part of a web page and its resources to be stored on the local machine [more…]

HTML5 and Local Storage

The local storage mechanism is a nice replacement for cookies, and with HTML5, you can write up to 5MB of data to a special file on the client. This file is not executable and cannot hold binary data [more…]

HTML5 and WebSQL Databases

Most high-end data applications use the relational database model to store data. HTML5 introduces a radical new model. The browser actually includes its own database program [more…]

HTML5 and Web Sockets

Web sockets are one of the most technically advanced additions to HTML5, and they also have the potential to afford the most dramatic change to the way Internet work is done. [more…]

What Is the HTML5 Canvas Element?

The canvas element is one of the most interesting new developments in HTML5. While the <canvas> tag is an HTML tag, it really isn't interesting without JavaScript programming. The [more…]

Draw a Basic Rectangle with the HTML5 Canvas Tag

To use the canvas tag available in HTML5, build a web page with a canvaselement in it. Typically, you provide width, height, and id parameters to indicate how big the cnavas is, like so: [more…]

Using Colors and Gradients with the HTML5 Canvas Tag

Nearly every operation in HTML5's canvas function implements a fill or stroke style. To get the most out of canvas, you need to understand how they work. The three primary types of styles you can use on [more…]

How to Include Images on Your Web Page with HTML5 Canvas

While HTML has long had support for images, the canvas interface of HTML5 adds new life to Web images. Images can be displayed inside a canvas, where they can be integrated with the vector-drawing techniques [more…]

How to Create Animation with the HTML5 Canvas Tag

Although the HTML5 canvas tag might not replace Flash as a mechanism for implementing games and animations in the browser, it is reasonably easy to add animation to a [more…]

How to Manipulate Pixels with the HTML5 Canvas Tag

With HTML5, you can extract the data of a canvas tag into the underlying pixel data. Manipulating this data gives you extensive control of your image in real time. You can use this data for color balancing [more…]

Storing and Retrieving Data in Local Storage with HTML5

With HTML5, you can write up to 5MB of data to a special file on the client computer. All the pages that come from your domain share the same storage area, so you can use this mechanism to keep data persistent [more…]

Numeric Values and Local Storage with HTML5

With HTML5, you can write up to 5MB of data to a special localStorage file on the client computer. All the pages that come from your domain share the same storage area, so you can use this mechanism to [more…]

Checking and Clearing Locally Stored Data with HTML5

With HTML5, you can write up to 5MB of data to a special localStorage database file on the client computer. All the pages that come from your domain share the same storage area, so you can use this mechanism [more…]

How to Use a Pattern as a Fill or Stroke with the HTML5 Canvas Tag

Nearly every operation in HTML5's canvas function implements a fill or stroke style. To get the most out of canvas, you need to understand how they work. The three primary types of styles you can use on [more…]

How to Format Articles with HTML Tags in Joomla

You can add some pizzazz to an article in the Joomla content management system (CMS) by adding HTML tags while you work with it in the article-editor page. To insert HTML tags with the TinyMCE editor, [more…]

HTML5 Canvas Context Attributes

Each HTML5 Canvas context contains attributes that can be modified by JavaScript code. Note that attributes are assigned to Canvas contexts, not individual Canvas objects. Attributes for a context are [more…]

HTML5 Canvas Drawing Functions

JavaScript functions are used to manipulate pixels on HTML5 Canvas areas based on attribute settings and function parameters. Functions reference a context using dot syntax notation. Here's an example: [more…]

HTML5 Canvas System Interaction: Animation, Audio/Video, and User Events

HTML5 Canvas applications communicate with the host browser for animation callbacks, playing audio/video, and handling user events. This provides a two-way channel between JavaScript code and the browser [more…]

Understanding the HTML5 Canvas Context

An HTML-defined web page can have multiple Canvas areas. Each Canvas has an associated context. The ID defined in the <canvas> tag is used in JavaScript code to identify a Canvas and its associated context [more…]

How to Use Core DOM Objects to Manage Application Content

The goal of any JavaScript application is to manage content. This means adding, deleting, and editing the HTML document that holds the various elements that structure and support the content. These objects [more…]

How to Use HTML DOM Objects to Manage Structure

Organizing the information the user sees onscreen into a cohesive presentation using JavaScript is important. The user should see the HTML document structure, but the structure should support the content [more…]

HTML5 Programming with JavaScript For Dummies Cheat Sheet

JavaScript uses objects extensively. Knowing which objects to use and when are important parts of working with JavaScript. By knowing the Browser, Core Document Object Model [more…]

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