HTML 5 have many more functionalities rather than HTML 4.0 and XHTML. HTML 5 still updating and only some of Browsers can support HTML 5 tags.
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HTML 5 introduces a number of features that helps in preparing a up-to-date websites.
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HTML5 have tags which introduced for better structure of the webpage.
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HTML5 syntax has slight of change from HTML4.0 thus the syntax may be change . But HTML5 have very simple syntax rather than HTML.
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HTML5 deprecated some tags to better use of HTML and also internet use. HTML5 removes some tags and rewritten.
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HTML5 have number of tags which listed on this page.
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An HTML attribute is a modifier of an HTML element. HTML attributes generally appear as name-value pairs, separated by "=", and are written within the start tag of an element, after the element's name.
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Attribute usage make style better than anything. Leaving attribute values unquoted is considered unsafe.
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In HTML5 event attribute used to handle Event.just like click on button, mouse over event to show tool tip.
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HTML5 have new form attribute to overcome the java script written code problem. Like autocompleter, autofocus.
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HTML5 <input> Element used to take input from users as many forms like Text, Number, Email, Image etc.
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HTML5 <form> Element used to transfer data to server.
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HTML5 <audio> tag is used to stream audio files on the html page.
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HTML5 <video> tag is used to play video on the web very easily.
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HTML5 <canvas> Tag is used to draw images, Rectangles and many shapes on the web.
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HTML5 SVG Element is used to draw scalable, resizable images on the web.
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HTML5 Geolocation feature is more useful for users to find their geographical position.
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HTML5 Drag and Drop used to move items one place to another on the webpage.
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