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Very clever... Otherwise... VERY bad. Very very bad.

Could you explain to me (s.length / 2 - 1) ? To me it is saying find the middle and move the index down one in case it is an even number string length so you can return both numbers. I don't get it, I do understand the deprication of substr and I used substring in my solution. Or if you could maybe explain what the (s.lenght / 2) - 1 means that will help as well.

A string also has a length property. Don't need to convert the string to an array with split().

substr is deprecated

Nothing wrong with that solution. Always good to practice the basics. Sometimes choosing to do it with a for loop is just good practice!

I was wondering how I could write a more concise arrow function for this. I'm very new to them obviously but this is great!

Good code, but unnecessarily big.
No need to use Math.ceil (if you don't use decimal numbers) and ternary operator.
Check my solution.

h2ker

ok now quit programming