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A brief overview of HTML5

From: HTML5: Structure, Syntax, and Semantics

Video: A brief overview of HTML5

I want to start out by giving you a brief overview of HTML5 and discussing why it's so important to the future of web development. HTML5 is the latest revision of HTML and it's designed to allow the creation of richer, more semantic code, as well to address how modern web applications are created. Now, the scope and evolution of this specification are little easier to understand if you know a little bit about its history and the motivation behind its development. Around 2004, the W3C was pursuing the development of XHTML2, which was to replace XHTML1 and HTML 4 as the primary markup language for the web.

A brief overview of HTML5

I want to start out by giving you a brief overview of HTML5 and discussing why it's so important to the future of web development. HTML5 is the latest revision of HTML and it's designed to allow the creation of richer, more semantic code, as well to address how modern web applications are created. Now, the scope and evolution of this specification are little easier to understand if you know a little bit about its history and the motivation behind its development. Around 2004, the W3C was pursuing the development of XHTML2, which was to replace XHTML1 and HTML 4 as the primary markup language for the web.

Not everybody was happy with the direction that XHTML2 was taking, and a group of web professionals, corporations, and browser developers decided to begin evolving HTML outside of the W3C. They formed the Web Hypertext Application Technology Working Group, or WHATWG for short, and started work on their own specification, which they named Web Applications 1.0. The group's primary argument was that XHTML2 did little to address the current direction of web development, and that it's lack of backwards compatibility with older versions of HTML would slow adoption.

To consider their arguments, think about how you use the web today. You might visit a restaurant using directions from Google maps, check in to let your friends know where you are, tweet about your meal, upload pictures for your friends, and then review and rank the restaurant at the end of the evening. All these activities are made possible by the development of powerful web applications. To the WHATWG, it was clear that any evolution of HTML that didn't also properly address of web applications was fundamentally flawed.

Eventually, the W3C agreed with them, and they adopted the specification in 2007, renaming it HTML5. Since then, the charter for XHTML2 had been revoked, leaving HTML5 as the sole focus for replacing HTML 4. The actual specification and what's in it continues to be one of more confusing aspects of HTML5, so much so in fact that I'll address that in a separate movie in just a moment. So, what's so special about HTML5? Well, first off, it's important to note that it retains the backwards compatibility of previous versions of HTML.

That means that implementing it won't add policies that would cause older pages to fail. It also adds new structural and semantic tags and attributes, allowing designers to make their content more meaningful. As I mentioned earlier, HTML5 focuses heavily on application development. It includes form controls, application-specific attributes, and adds support for multiple APIs. These capabilities will make it easier for designers and developers to build web and mobile applications, serve video and audio, and create interactive content.

Also, unlike previous versions of HTML, in HTML5, the specification contains explicit rules on how content should be parsed and how errors should be handled. This degree of detail is designed to enhance interoperability across systems. Although no one can predict exactly how implementations will adopt the specification, this should make the elusive goal of ensuring consistent user experiences across platforms and devices easier to achieve. Clearly, HTML5 marks a significant step in the evolution of HTML.

Even now, with adoption still in the early stages, we have seen dramatic changes in web and mobile content offering. As with any new technology, keeping pace with changes and implementations can take a lot of effort. For the short term, we're also going to be faced with the very real challenge of taking advantage of HTML5's new features while also providing backwards- compatible alternatives. However, it's certainly an exciting time to be creating web content. As an early adopter, you have an opportunity to be a part of the community that is not only using HTML5, but shaping how future web designers will use it as well.

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HTML5: Structure, Syntax, and Semantics

46 video lessons · 37497 viewers

James Williamson
Author

 
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  1. 2m 20s
    1. Welcome
      48s
    2. Using the exercise files
      1m 32s
  2. 18m 41s
    1. A brief overview of HTML5
      3m 57s
    2. What's in the HTML5 specification?
      8m 17s
    3. Why do we need new structural elements?
      6m 27s
  3. 50m 33s
    1. Defining HTML5 documents
      5m 5s
    2. HTML5 syntax
      9m 14s
    3. The header element
      5m 22s
    4. The nav element
      4m 55s
    5. The section element
      4m 51s
    6. The article element
      4m 48s
    7. The aside element
      4m 13s
    8. The footer element
      4m 17s
    9. Content model overview
      7m 48s
  4. 35m 28s
    1. Understanding the outline algorithm
      3m 17s
    2. Creating document sections
      8m 25s
    3. Using headings properly
      9m 1s
    4. Using hgroup to override sectioning
      4m 17s
    5. Properly nesting structure
      7m 17s
    6. Sectioning roots
      3m 11s
  5. 58m 30s
    1. Organizing content
      4m 41s
    2. Planning document structure
      5m 47s
    3. Choosing the right structural element
      4m 43s
    4. Checking document outlines
      5m 27s
    5. Coding initial page structure
      5m 28s
    6. Using class and ID attributes
      5m 31s
    7. Structuring headers
      13m 13s
    8. Building navigation
      7m 1s
    9. Structuring footers
      6m 39s
  6. 1h 27m
    1. Working with figure and figcaption
      7m 12s
    2. Grouping content with asides
      3m 46s
    3. Using divs in HTML5
      5m 0s
    4. Working with lists in HTML5
      7m 10s
    5. The return of bold and italic
      5m 52s
    6. Citing works semantically
      6m 32s
    7. Using the address element
      5m 24s
    8. Using the small element
      4m 24s
    9. Using the mark element
      5m 16s
    10. Working with date and time
      11m 55s
    11. Creating block-level links
      8m 53s
    12. Understanding link relationships
      9m 28s
    13. Defining link relationships
      6m 23s
  7. 17m 22s
    1. Current browser support
      7m 38s
    2. Ensuring block-level display
      4m 3s
    3. Adding support for elements in older browsers
      5m 41s
  8. 3m 46s
    1. Additional Resources
      3m 46s

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