Objectives :
- What are the differences between HTML4 & HTML5?
- What is new in HTML5?
- What is deprecated from HTML5?
Here are the key differences between HTML4 & HTML5:
|
HTML4 |
HTML5 |
|
DOCTYPE is much longer as HTML4 is based on SGML-based. <!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01//EN” |
DOCTYPE is required to enable standards mode for HTML documents.<!DOCTYPE html> |
|
Audio and Video are not part of HTML4 specification. |
Audio and Videos are integral part of HTML5 specifications e.g. <audio> and<video> tags. |
|
Vector Graphics is possible with the help of technologies such as VML, Silverlight, Flash etc. |
Vector graphics is integral part of HTML5 e.g. SVG and canvas. |
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It is almost impossible to get true GeoLocation of user browsing any website especially if it comes to mobile devices. |
JS GeoLocation API in HTML5 helps identify location of user browsing any website (provided user allows it) |
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Browser cache can be used as temporary storage. |
Application Cache, Web SQL database and Web storage is available as client side storage. Accessible using JavaScript interface in HTML5 compliant browsers. |
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Web Sockets are not available. Generally used mechanisms are long polling and streaming. |
Full duplex communication channels can be established with Server using Web Sockets. Accessible using JavaScript interface in HTML5 compliant browsers. |
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Does not allow JavaScript to run in browser. JS runs in same thread as browser interface. |
Allows JavaScript to run in background. This is possible due to JS Web worker API in HTML5. |
| Works with all old browsers |
Most of modern browser have started supporting HTML5 specification e.g. Firefox, Mozilla, Opera, Chrome, Safari etc. |
Enjoy coding now.