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.
This comment is hidden because it contains spoiler information about the solution
"var" is an old way or declaring a variable. Modern JavaScript uses either "const" or "let". Const is a so called immutable variable, which means that you can NOT change it's value. let, on the other hand, is mutable, i.e. you can change it's value later on. You should use "const" by default since it's better to have as few variable mutations as possible.