If you have something like this:
console.log('one', 'two', 'three');
you will only see
one
logged to the console. You'll need to manually wrap the params in an Array and join, like so:
console.log([ 'one', 'two', 'three' ].join(' '));
to see the expected output.
(Note I referenced this on StackOverflow in hopes that it might get some play.)