text: function Circle(radius) {
    this.radius = radius;
  }
  
  Circle.prototype.getDiameter = function () {
    return 2 * this.radius;
  };
  
  const circle = new Circle(5);
  console.log(circle.getDiameter());
  
  const person = {
    name: "Lee",
    getName() {
      console.log(this);
      return this.name;
    },
  };
  console.log(person.getName());
  
  function Person(name) {
    this.name = name;
    console.log(this);
  }
  
  const me = new Person("Lee");
  const me2 = new Person("song");
  