RailsCasts Episode #297: Running JavaScript in Ruby

http://railscasts.com/episodes/297-running-javascript-in-ruby

Commands used in the Rails Console

c = V8::Context.new c.eval('1 + 2') c[:num] = 3 c.eval('num num') c.eval('math = {square: function(n) { return nn }}') c[:math].square(5) c[:square] = lambda { |n| n*n } c.eval('square(4)')