javascript class
class ClassMates{
constructor(name,age){
this.name=name;
this.age=age;
}
displayInfo(){
return this.name + "is " + this.age + " years old!";
}
}
let classmate = new ClassMates("Mike Will",15);
classmate.displayInfo(); // result: Mike Will is 15 years old!javascript create class
class Person {
constructor(name, age) {
this.name = name;
this.age = age;
}
present = () => { //or present(){
console.log(`Hi! i'm ${this.name} and i'm ${this.age} years old`)
}
}
let me = new Person("tsuy", 15);
me.present();
// -> Hi! i'm tsuy and i'm 15 years old.javascript 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());javascript class
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); // 100javascript class
//JavaScript 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)); // 225javascript class
// unnamed
let Rectangle = class {
constructor(height, width) {
this.height = height;
this.width = width;
}
};
console.log(Rectangle.name);
// output: "Rectangle"
// named
let Rectangle = class Rectangle5 {
constructor(height, width) {
this.height = height;
this.width = width;
}
};
console.log(Rectangle.name);
// output: "Rectangle2"Copyright © 2021 Codeinu
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