Dog Class example in Javascript

Dog.js

class Dog {
  constructor(nameOrDog = '') {
    if (nameOrDog instanceof Dog) {
      this.name = nameOrDog.getName();
    } else if ((typeof nameOrDog) === 'string') {
      this.name = nameOrDog;
    } else {
      // throw new Error('type is not supported');
    }
  }
  setName(name) {
    this.name = name;
  }
  
  getName() {
    return this.name;
  }
}
myDog = new Dog( "nathan");
  
myDog.setName( "nathan II" );
/* Call another class method to get Dog's Name */
myDogName = myDog.getName();
/* You can access instance variable as follows as well */
console.log("myDogName: " + myDogName );
clonedDog = new Dog(myDog);
/* You can access instance variable as follows as well */
console.log("cloned dog name: " + clonedDog.getName() );