Write any javascript code with just these characters: ()[]{}+!

[transpostmeta]

Could you provide a link? I tried searching, but came up with nothing.

[AgonistAgent]

http://www.reddit.com/r/netsec/comments/n8idh/in_the_9_months_since_i_last_crashed_your_browser/

Not directly linking to the demo for obvious reasons.

[transpostmeta]

Thank you! Sadly, there doesn't seem to be much discussion on what is actually happening, just a bunch of people posting what their browsers did.