Lazy create DOM contents when constructing new structures using $(String)

[lukaseder]

This would mean a great performance improvement, if $(String) and similar methods wouldn't create new DOM documents every time, but only if needed. That way, the following structure would only create one single DOM document:

$("root",
  $("child", "text1"),
  $("child", "text2")
);

[bagerman]

never mind. overlooked thread safety.

[lukaseder]

never mind. overlooked thread safety.

Yep :)