😂

Nice, how did you figure that out?

Then how does this solution passed?

O(1) or O(log n)?

true enough, but at time of writing the code, default parameters threw out the syntax highlighting on codewars

Spoiler flag, please... (messages are visible form the dashboard!)

this works, but nicer is using ES6 default parameters https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Functions/Default_parameters

This works, but much nicer in ES6 is to use default parameters https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Functions/Default_parameters

You shouldn't need to do this.species = ..., this.legs = ... etc in the Shark, Dog and Cat Classes. By calling super the parent class (Animal) is setting these properties for you.

i do not know the meaning of that word before,,,,,,,,,
sorry,,,,,
it is my mistake.

Its a typo, english is not his first language. He's my student.

I don't know if this is specifically what you were referring to when you commented on naming, but... wow, the name of that second function is REALLY rude where I come from.