Class Inheritance Hierarchy in OOP in JavaScript

It is possible to inherit from a class that is itself a descendant. Let's look at an example. Let's say we have the following parent class:

javascriptclass User {
  setName(name) {
    this._name = name;
  }
  getName() {
    return this._name;
  }
}

The following class inherits from this class:

javascriptclass Student extends User {
  setYear(year) {
    this._year = year;
  }
  getYear() {
    return this._year;
  }
}

And another class inherits from this class:

javascriptclass StudentProgrammer extends Student {
  setSkill(skill) {
    this._skill = skill;
  }
  getSkill() {
    return this._skill;
  }
}