here as well as everywhere else when you use some code in jade (env.t...) the syntax is a little different, it should be `=env.t...` not `| env.t...`, when you're using tags it is `h3=env.t...` not `h3 env.t...` 

You can find more informations on the jade website http://jade-lang.com/, especially this part http://jade-lang.com/tutorial/#Javascript

Aside from this, it's perfect, thanks!