should be '542 -214' but you get '6 -214'

Your code is returning "6 -214" when it should be returning "542 -214". You can see this if you do console.log(highest + " " + lowest) before you return.

Your issue has to do with how the sort method handles a collection of strings verse a collection of numbers. It is a common mistake people do in this kata. For more explanation, you can see this.

I'll check if I can make the test case failure messages make more sense in JavaScript, but I don't think it is possible.
I wonder why the "Testing common string sort mistake" test case didn't fail.

It's because you modified sample tests yourself, that's why. Look at the last line in your screenshot, there's no expected value for it. That's why they're sample tests, because you can modify them at any time. If you want to see what sample tests there should be, copy your solution and hit 'reset'.

You can always hit 'Attempt', no matter if 'Test' fails or not (it's different tests suite). The error message tells you that you returned 'Draw', but it should be 'Draw!'. Maybe you modified the code after posting it here?

I also just copied it and it works fine. Are you adding some extra code that you're not showing us? To attach a screenshot, you can upload it somewhere, and show it here using syntax: ![some_text](image_url_here)

See: https://docs.codewars.com/references/markdown/#links

You have a typo, it's scissors not scissor.

Copied/pasted your code and it worked just fine. Also, please mark your post as having spoiler content next time.