how to create a class javascript code example

Example 1: create element javascript with class

// create div element by javascript with class

var div = document.createElement('div');
div.className = "div1";

Example 2: 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 3: javascript create class

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

Example 4: javascript classes

class Rectangle {
  constructor(height, width) {
    this.height = height;
    this.width = width;
  }
  // Getter
  get area() {
    return this.calcArea();
  }
  // Method
  calcArea() {
    return this.height * this.width;
  }
}

const square = new Rectangle(10, 10);

console.log(square.area); // 100

Example 5: javascript classes

let Person = class {
  constructor(firstName, lastName) {
    this.firstName = firstName;
    this.lastName = lastName;
  }
}

Example 6: class javascript

class Polygon {
  constructor(height, width) {
    this.height = height;
    this.width = width;
  }

  get area() {
    return this.calcArea();
  }

  calcArea() {
    return this.height * this.width;
  }
}

const square = new Polygon(10, 10);

console.log(square.area);