What is HTML5?

Many of us wants to know what are the changes that have been made in HTML5 when compared to the previous versions of HTML. Let us see them in detail.

HTML5 will be the new standard for HTML.The previous version of HTML, HTML 4.01, came in 1999. The web has changed a lot since then.

HTML5 is still a work in progress. However, the major browsers support many of the new HTML5 elements and APIs.

HTML or Hypertext Markup Language is a formatting language that programmers and developers use to create documents on the Web. The latest edition HTML5 has enhanced features for programmers such as <video>, <audio> and <canvas> elements. You view a Web page written in HTML in a Web browser such as Internet Explorer, Mozilla Firefox or Google Chrome. The HTML5 language has specific rules that allow placement and format of text, graphics, video and audio on a Web page. Programmers use these programming tags or elements to produce web pages in unique and creative ways. Tags such as <section>, <article>, <header> enable the creator to make a more efficient and intelligent web page. Users will not have to use a Flash plug-in for video and audio content. Visual Studio users typically write code in HTML5 when creating web site content.

New Semantic/Structural Elements

HTML5 offers new elements for better structure:

Tag Description
<article> Defines an article
<aside> Defines content aside from the page content
<bdi> Isolates a part of text that might be formatted in a different direction from other text outside it
<command> Defines a command button that a user can invoke
<details> Defines additional details that the user can view or hide
<summary> Defines a visible heading for a <details> element
<figure> Specifies self-contained content, like illustrations, diagrams, photos, code listings, etc.
<figcaption> Defines a caption for a <figure> element
<footer> Defines a footer for a document or section
<header> Defines a header for a document or section
<hgroup> Groups a set of <h1> to <h6> elements when a heading has multiple levels
<mark> Defines marked/highlighted text
<meter> Defines a scalar measurement within a known range (a gauge)
<nav> Defines navigation links
<progress> Represents the progress of a task
<ruby> Defines a ruby annotation (for East Asian typography)
<rt> Defines an explanation/pronunciation of characters (for East Asian typography)
<rp> Defines what to show in browsers that do not support ruby annotations
<section> Defines a section in a document
<time> Defines a date/time
<wbr> Defines a possible line-break


New Media Elements

HTML5 offers new elements for media content:

Tag Description
<audio> Defines sound content
<video> Defines a video or movie
<source> Defines multiple media resources for <video> and <audio>
<embed> Defines a container for an external application or interactive content (a plug-in)
<track> Defines text tracks for <video> and <audio>


The new <canvas> Element

Tag Description
<canvas> Used to draw graphics, on the fly, via scripting (usually JavaScript)


New Form Elements

HTML5 offers new form elements, for more functionality:

Tag Description
<datalist> Specifies a list of pre-defined options for input controls
<keygen> Defines a key-pair generator field (for forms)
<output> Defines the result of a calculation
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