create class node js code example
Example 1: javascript class
class Person {
constructor(name, age) {
this.name = name;
this.age = age;
}
introduction() {
return `My name is ${name} and I am ${age} years old!`;
}
}
let john = new Person("John Smith", 18);
console.log(john.introduction());
Example 2: node js class
class Rectangle {
constructor(height, width) {
this.height = height;
this.width = width;
Rectangle.count++;
}
get area() {
return this.calcArea();
}
calcArea() {
return this.height * this.width;
}
static calcArea(width, height) {
return width * height;
}
}
Rectangle.count = 0;
const square = new Rectangle(10, 10);
console.log(square.height, square.width);
console.log(square.area);
console.log(square.calcArea());
console.log(Rectangle.count);
console.log(Rectangle.calcArea(15, 15));
Example 3: javascript classes
class SayHelloTo {
name (to) {
console.log(`Hello ${to}`);
}
constructor (to) {
this.name(to);
}
}
const helloWorld = new SayHelloTo(World);