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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.
Mark your post as having spoiler content next time.
Is there a reason to post the same question twice? I deleted the duplicate question below.
You are doing your thing with i. You probably want to do your thing with the i-th character of the isbn.
Your task is to return the number of JavaScript developers coming from Europe. You should compare to
Javascriptand notHTMLPlease use a spoiler flag when you post code, so that users who didn´t solve the kata cannot see it; I put the flag for you this time. Also use markdown tags to format your code or it's not usable. Refer to the documentation about this and more: https://docs.codewars.com/training/troubleshooting/#post-discourse
You posted twice the same message, can you remove the one below please?