Tuesday, July 10, 2012
What's different in HTM5 and HTML4?
Without going into much description, let us check out the differences between HTML4 and HTML5 in following tabular manner.
| HTML4 | HTML5 |
| DOCTYPE is much longer as HTML4 is based on SGML-based. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> | DOCTYPE is required to enable standards mode for HTML documents. <!DOCTYPE html> |
| Audio and Video are not the part | Audio and Videos are integral part of HTML5 specifications e.g. <audio> and <video> tags |
| 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 |
| 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. |
| Works with all old browsers | Most of modern browser have started supporting HTML5 specification e.g. Firefox, Mozilla, Opera, Chrome, Safari etc. |
| 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 |
| 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. |
| 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 |
Although, I'm very new to HTML5, just like a newbie. If you find anything wrong in above differences, do correct me there.
Thank You!
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