how define function in javascript class code example

Example 1: how to create a class javascript

class Person {
	constructor(name, age) {
		this.name = name;
		this.age = age;
	}
	displayInfo() {
		return this.name + ' is' + this.age + " years old";
	}
}

const Anthony = new Person('Anthony', 32);

Example 2: javascript create class

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