node js class
// Improved formatting of Spotted Tailed Quoll's answer
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());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//Node js class: Here a quick code example
// Basic class
class Rectangle {
// Constructor
constructor(height, width) {
// Member variables
this.height = height;
this.width = width;
// Access static member variable
Rectangle.count++;
}
// Getter
get area() {
return this.calcArea();
}
// Method
calcArea() {
return this.height * this.width;
}
// Static method
static calcArea(width, height) {
return width * height;
}
}
// Static member variable
Rectangle.count = 0;
// Class instantiation
const square = new Rectangle(10, 10);
// Access member variable
console.log(square.height, square.width); // 10 10
// Call getter
console.log(square.area); // 100
// Call method
console.log(square.calcArea()); // 100
// Access static member variable
console.log(Rectangle.count); // 1
// Call static method
console.log(Rectangle.calcArea(15, 15)); // 225class NameOfClass {
//class declaration first letter should be capital it's a convention
obj="text";
obj2="some other text";
}
//always call class with "new" key word
console.log(new NameOfClass);