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JS Classes are not Hoisted

You will get an error if you try to use a class before it is declared.

//You cannot use the class yet.
//myCar = new Car("Ford") will raise an error.

class Car {
  constructor(brand) {
    this.carname = brand;
  }
}

//Now you can use the class:
const myCar = new Car("Ford");
document.getElementById("demo").innerHTML = myCar.carname;