The <output> element doesn't have many additional semantics on top of a non-semantic element like <div>. All it supports is a special "for" attribute that doesn

The <output> element doesn't have many additional semantics on top of a non-semantic element like <div>. All it supports is a special "for" attribute that doesn't require any additional behaviour [1]. IE9 is the first version of IE that doesn't barf on unknown new elements in the DOM, so I suppose they got support for this "for free" without any additional development. [1] http://dev.w3.org/html5/spec/Overview.html#the-output-element http://dev.w3.org/html5/spec/Overview.html#the-output-elemen...