JavaScript vs Hescale or Elixir?

JavaScript allows you to do, for example, is make classes. You could create a new student object being like let mat equal new student and pass in variables or something like that. And then as you do that, you can say, oh, I want to loop through an array of new students and then change each of their GPAs one by one. That is something that you can do in JavaScript. But the way that you would do it in these other languages is instead of creating this object with these functionalities built in, you would just have an array where it's like, okay, let students equal and then an array of these objects called arrays. It doesn't update the previous one