Hello World in 1 line of pure Javascript

As was noticed on habrahabr it is not "pure" javascript as it requires document object. Neither is

console.log("Hello World!");

As it requires console object. So we are left only with

throw "Hello World"

"Show HN: 30 lines of pure JavaScript in 30 lines of pure JavaScript" :)

Do you think you could shorten this down to less than one line? One line seems wasteful.

Would be great through js2js[1]

[1] http://eleks.github.io/js2js/

Mystical.

Smart. You realised the trend.

Genius :)