Difference between constructor in ES6 class and constructor in prototype?

Question

Both ES6 class and prototype of function have a contructor, but I\'m wondering are they the same? Let me give more explanations.

So, I create a Cat function

Answer 1

Since classes are just a syntactic sugar over prototype inheritance, is the constructor function in Dog class just the same as in Cat function?

Yes, the constructor-prototype relationship still works the same.

There are a few differences though, for example Dog.prototype is not writable and Dog can only be called with new.