Loading collection data...
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.
"1234" doesn't contain letters. I was under the impression that it was implied that only letters would be available in the strings. I think isNan() is not enough for proper validation as things like "#$%^" would pass the test but still won't qualify as a name.
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thank you
ES6 -_-
Me writing MinecraftPE mods on ES5.1 and not having this features, and silently crying in the corner...
This doesn't check for numbers in the input array.