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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.
It's the third in a series of three to show the
filter-method of javascript-arrays and it's possibilities. Be sure to check out the first two, also!The instructions point to documentation for the filter() method:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
You have to write your solution in a way that uses this method, in addition to returning the correct answer.