HTML5

► The canvas element: Canvas consists of a drawable region defined in HTML code with height and width attributes. JavaScript code may access the area through a full set of drawing functions similar to other common 2D APIs, thus allowing for dynamically generated graphics. Some anticipated uses of the canvas include building graphs, animations, games, and image composition.

► Timed media playback

► Offline storage database

► Document editing

► Drag-and-drop

► Cross-document messaging

► Browser history management

► MIME type and protocol handler registration

HTML5 is being developed as the next major revision of HTML (HyperText Markup Language), the core markup language of the World Wide Web. The Web Hypertext Application Technology Working Group (WHATWG) started work on the specification in June 2004 under the name Web Applications 1.0. As of March 2010, the specification is in the Draft Standard state at the WHATWG, and in Working Draft state at the W3C.

HTML5 is the proposed next standard for HTML 4.01, XHTML 1.0 and DOM Level 2 HTML. It aims to reduce the need for proprietary plug-in-based rich internet application (RIA) technologies such as Adobe Flash, Microsoft Silverlight, Apache Pivot, and Sun JavaFX.

► Cleaner markup

► Standardized approach to mobile devices support

► Additional semantics of new elements like <header>, <nav>, and <time>

► New form input types and attributes that will (and in Opera’s case, do) take the hassle out of scripting forms.

The new HTML5 specification allows browsers to prefetch some or all of a website assets such as HTML files, images, CSS, JavaScript, and so on, while the client is connected. It is not necessary for the user to have accessed this content previously, for fetching this content. In other words, application cache can prefetch pages that have not been visited at all and are thereby unavailable in the regular browser cache. Prefetching files can speed up the site’s performance, though you are of course using bandwidth to download those files initially.

HTML5 is the latest version of HTML standard supporting multimedia and graphical content.

HTML5 introduced many elements such as , instead of to support multimedia.

a) Cleaner markup

b) Additional semantics of new elements like <header>, <nav>, and <time>

c) New form input types and attributes that will (and in Opera’s case, do) take the hassle out of scripting forms.

We can display video using the tag as shown below:

<video width=“320″ height=“240″ controls=“controls”>

<source src=“test.mp4″ type=“video/mp4″ />

</video>

HTML5 offers two new objects for storing data on the client:

LocalStorage – stores data with no time limit

<script type=“text/javascript”>

localStorage.lastname=“ZAG”;

document.write(localStorage.lastname);

</script>

SessionStorage – stores data for one session.The data is deleted when the user closes the browser window.

<script type=“text/javascript”>

sessionStorage.lastname=“ZAG”;

document.write(sessionStorage.lastname);

</script>

We can display audio using the tag as shown below:

<audio controls=“controls”>

<source src=“test.mp3″ type=“audio/mp3″ />

</audio>

HTML5 specification allows browsers to prefetch some or all of a website assets such as HTML files, images, CSS, JavaScript, and so on, while the client is connected. It is not necessary for the user to have accessed this content previously, for fetching this content. In other words, application cache can prefetch pages that have not been visited at all and are thereby unavailable in the regular browser cache. Prefetching files can speed up the site’s performance, though you are of course using bandwidth to download those files initially.

HTML5 is the proposed next standard for HTML 4.01, XHTML 1.0 and DOM Level 2 HTML. It aims to reduce the need for proprietary plug-in-based rich internet application (RIA) technologies such as Adobe Flash, Microsoft Silverlight, Apache Pivot, and Sun JavaFX.

The canvas element is used to draw graphics images on a web page by using javascript like below

<canvas id=“pcdsCanvas” width=“500″ height=“400″>

</canvas>

<script type=“text/javascript”>

var pcdsCanvas=document.getElementById(“phpzagCanvas”);

var pcdsText=pcdsCanvas.getContext(“2d”);

pcdsText.fillStyle=“#82345c”;

pcdsText.fillRect(0,0,150,75);

</script>

The sessionStorage object stores the data for one session. The data is deleted when the user closes the browser window. like below we can create and access a sessionStorage here we created “name” as session

<script type=“text/javascript”>

sessionStorage.name=“PHPZAG”;

document.write(sessionStorage.name);

</script>

The canvas element is used to draw graphics images on a web page by using javascript like below

Like below we can add video in html5

<video width=“320″ height=“240″ controls=“controls”>

<source src=“mysong.mp4″ type=“video/mp4″ />

<source src=“mysong.ogg” type=“video/ogg” />

</video>

And audio like this

<audio controls=“controls”>

<source src=“mysong.ogg” type=“audio/ogg” />

<source src=“mysong.mp3″ type=“audio/mpeg” />

</audio>

Yes we can use below new input type Attribute in HTML5

Type: Value:

tel The input is of type telephone number

search The input field is a search field

url a URL

email One or more email addresses

datetime A date and/or time

date A date

month A month

week A week

time The input value is of type time

datetime-local A local date/time

number A number

range A number in a given range

color A hexadecimal color, like #82345c

placeholder Specifies a short hint that describes the expected value of an input field

Below are the New Media Elements have added in HTML5

Tag Description

<audio> For multimedia content, sounds, music or other audio streams

<video> For video content, such as a movie clip or other video streams

<source> For media resources for media elements, defined inside video or audio

elements

<embed> For embedded content, such as a plug-in

<track> For text tracks used in mediaplayers

yes we can use Canvas element in html5 like <canvas></canvas>