class to create objects storing age, name, and cost

class Animal {
    constructor(age, name, cost) {
        this.age = age;
        this.name = name;
        this.cost = cost;
    }
    getDetails() {
        return `${this.name} is ${this.age} years old and costs ${this.cost}`;
    }
}

const animalDetails = new Animal(4, 'dog', '$4,000');
console.log(animalDetails.getDetails());