[wmil]

I haven't seen any profiling of jQuery, but last I heard createElement('div') and appendChild was slower than innerHTML ="<div></div>".

[dsego]

That's not true any more: http://jsperf.com/fragment-vs-appendchild-vs-innerhtml/8

[MatthewPhillips]

That used to be true, but nowadays it depends on the browser and the difference is a rounding error.

[dclowd9901]

Then why wouldn't jquery just proxy it? It's not like the creators are shitty at JavaScript.