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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.
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The error tells you that whatever you try to use split method on is undefined, in this case "jadenStr". Read something on prototypes to get idea how to pull out string.