what is a class in es6 code example

Example 1: es6 class example

<script>
   class Student {
      constructor(rno,fname,lname){
         this.rno = rno
         this.fname = fname
         this.lname = lname
         console.log('inside constructor')
      }
      set rollno(newRollno){
         console.log("inside setter")
         this.rno = newRollno
      }
   }
   let s1 = new Student(101,'Sachin','Tendulkar')
   console.log(s1)
   //setter is called
   s1.rollno = 201
   console.log(s1)
</script>

Example 2: javascript es6 class

class MyClass {
  constructor() {
    this.answer = 42;
  }
}

const obj = new MyClass();
obj.answer; // 42