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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.
Spoiler flag!!!
That's not kata issue, but problem with your code. (use question tag)
JavaScript Completions: 4265 (you can see at the top of this page or bottom of kata details page)
In short, your code is failing some tests, you can use
console.log()to debug it and please read the error messages that are generated to help you.