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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
No, but when you reach the 8 of the pair (in your example), the [6, 4] pair wasn't even read. That's what parsing from the left means.
No, you're wrong, that's not what the kata asks, [2, 8] is the right answer.
Had the same problem. With plus/minus, you shouldn't modify the existing class, but instead return a new one (which is stated in the description).
This comment is hidden because it contains spoiler information about the solution
Yeap, I already saw such things as RegExp's, but I haven't learned them yet ;)
I'm beginner in JavaScript and programming as well.
But thanks for your comment!)