'Fixed, see comments above'

I didn't think the instructions were clear enough to be honest

I like this one! it's fairly obvious, but I hadn't seen that I could pass an initial value to the reduce function to prevent it breaking if the array passed in was empty.

Realy nice solutions!!! I take this as a note)

Nice. Never thought of instantiating another variable within one loop.

Also, toFixed() gives bad behaviour sometimes; best practice to round x to the y decimal digit is to use Math.round(x*Math.power(10,y))/Math.power(10,y).

In this case Math.round(x*100)/100 should cut it.

You're returning a String, while you're expected to return a Number.

I think you meant to say that a solution with String.prototype.replace is accepted.

Thanks for reporting, it is fixed. :)

Sorry I didn't get you. Could you be more specific?

This has major issues but I have no pints to set it, kata description is totally wrong (there is wrong message, int variable mentioned while js has number and the mechanics are not clear enough) and tests are exceeding max number value

Be consistent with the instructions and tests. The instructions and the test ask for different error messages.

slightly repetitive

Instructions are incorrect. Random tests prevent it from working in javascript, but when resubmitted with same solution it works.