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C # Corner : Delhi Student’s Day
HTML 5
Don’t be afraid, Let's Code

AGENDA
• HTML5: Past, Present & Future
• What is HTML5
• What's New in HTML5
• Simplified and Loose Syntax
• New Elements and Attributes
• Embedded Media
• Canvas
• Offline Storage
• Drag and Drop
• Geo-Location …Etc
• Don’t be afraid, Let's Code
• (Lets Design a Drawing tool using HTML5...)
• Thanks ! Enjoy Programming

HTML5: PAST, PRESENT & FUTURE
• December 1997: HTML 4.0 is published by the W3C
• February - March 1998: XML 1.0 is published
• December 1999 - January 2000: ECMAScript 3rd Edition, XHTML 1.0 (Basically HTML tags
reformulated in XML) and, HTML 4.01 recommendations are published
• May 2001: XHTML 1.1 recommendation is published
• August 2002: XHTML 2.0 first working draft is released.
• December 2002: XHTML 2.0 second working draft published.
• January 2008: First W3C working draft of HTML5 is published!!
• 84% of Developers Plan to Adopt Key HTML5 Features
• The key to understanding HTML5 is that it is not one, but a group of technologies. Within HTML5,
developers have a tremendous amount of choice regarding what they use and what they don’t use
• The power of HTML5 being ready for prime-time can be seen in Microsoft’s choice to utilize it in
Windows 8

WHAT IS HTML5
• HTML5 is the newest version of HTML, only recently
gaining partial support by the makers of web browsers.
• It incorporates all features from earlier versions of HTML,
including the stricter XHTML.
• It adds a diverse set of new tools for the web developer to
use.
• It is still a work in progress. No browsers have full HTML5
support. It will be many years – perhaps not until 2018 or
later - before being fully defined and supported.

WHAT'S NEW IN HTML5
New Elements in HTML5
<article>
<aside>
<audio>
<canvas>
<datalist>
<figure>
<figcaption>
<footer>
<header>
<hgroup>
<mark>
<nav>
<progress>
<section>
<source>
<svg>
<time>
<video>
These are just some of the new elements introduced in HTML5. I will
be exploring each of these during my sessions…

OTHER FEATURES
 Built-in audio and video support (without plugins)
 Enhanced form controls and attributes
 The Canvas (a way to draw directly on a web page)
 Drag and Drop functionality
 Support for CSS3 (the newer and more powerful version
of CSS)
 More advanced features for web developers, such as data
storage and offline applications.

FIRST LOOK AT HTML5
Remember the DOCTYPE declaration from XHTML?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
In HTML5, there is just one possible DOCTYPE declaration and it is simpler:
<!DOCTYPE html>
Just 15 characters!
The DOCTYPE tells the browser which type and version of document to
expect. This should be the last time the DOCTYPE is ever changed. From
now on, all future versions of HTML will use this same simplified declaration.

THE <HTML> ELEMENT
This is what the <html> element looked like in XHTML:
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"
lang="en">
Again, HTML5 simplifies this line:
<html lang="en">
The lang attribute in the <html> element declares which language the page
content is in. Though not strictly required, it should always be specified, as it
can assist search engines and screen readers.
Each of the world’s major languages has a two-character code, e.g. Spanish = "es",
French = "fr", German = "de", Chinese = "zh", Arabic = "ar".

THE <HEAD> SECTION
Here is a typical XHTML <head> section:
<head>
<meta http-equiv="Content-type" content="text/html; charset=UTF-8" />
<title>My First XHTML Page</title>
<link rel="stylesheet" type="text/css" href="style.css" />
</head>
And the HTML5 version:
<head>
<meta charset="utf-8">
<title>My First HTML5 Page</title>
<link rel="stylesheet" href="style.css">
</head>
Notice the simplified character set declaration, the shorter CSS stylesheet link
text, and the removal of the trailing slashes for these two lines.

BASIC HTML5 WEB PAGE
Putting the prior sections together, and now adding the <body> section and
closing tags, we have our first complete web page in HTML5:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>My First HTML5 Page</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<p>HTML5 is fun!</p>
</body>
</html>
Let's open this page in a web browser to see how it looks…

     
Even though we used HTML5, the page looks exactly the same in a web
browser as it would in XHTML. Without looking at the source code, web
visitors will not know which version of HTML the page was created with.

CANVAS
With HTML5’s Canvas API, we’re no longer limited to drawing rectangles on our sites.
We can draw anything we can imagine, all through JavaScript. This can improve
the performance of our websites by avoiding the need to download images off the
network.With canvas, we can draw shapes and lines, arcs and text, gradients and
patterns. In addition, canvas gives us the power to manipulate pixels in images and
even video.
The Canvas 2D Context spec is supported in:
■ Safari 2.0+
■ Chrome 3.0+
■ Firefox 3.0+
■ Internet Explorer 9.0+
■ Opera 10.0+
■ iOS (Mobile Safari) 1.0+
■ Android 1.0+

….
6.2. Drawing a canvas
We obtain our drawing context by calling the getContext method and passing it
the string "2d", since we’ll be drawing in two dimensions:

I WILL EXPLAIN IN BLOG
With Example: Pixel Bender

VALIDATING AN HTML/HTML5 DOCUMENT
Validating a HTML document means checking or verifing its code according to the
standards of HTML5 specifications. For validating an HTML5 document we can use an
HTML validator. These are programs that check HTML documents for conformance to
the standards. Some common online HTML validator programs:
http://validator.w3.org/
http://validator.whatwg.org/
• Open a browser and URL ( http://validator.w3.org ).
• Select the "Validate by Direct Input" tab and add the HTML code of the
FirstHTMLpage.html file in the provided area. (We can also upload the
respective HTML file document directly or By URL).
• Click the check button. If the code complies with the HTML5 standards
then the validator displays the results accordingly….
• Click the "Check" button ant note that if your document does not meet the
standards of HTML5 then the errors occur, like…
• You can remove all the errors by using this platform…

VALIDATION
http://www.c-sharpcorner.com/UploadFile/79037b/validating-an-htmlhtml5-document/

Thanks ! Enjoy Programming
www.ankurmishra.in
ankur@fotreantech.com
Twitter: @iAnkurMishra
Facebook: iAnkurMishra

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