Lesson 12 — Classes

日本語

Syntax

Declare a class with an indented body. fn new is the constructor, and methods are fn declarations inside the class:

class Animal
  fn new name
    this.name be name

  fn speak
    console.log[//;[this.name] says hello;//]

const dog be new Animal[//;Pochi;//]
dog.speak[]

Compiles to:

class Animal {
  constructor(name) {
    this.name = name;
  }
  speak() {
    console.log(`${this.name} says hello`);
  }
}
const dog = new Animal("Pochi");
dog.speak();

Task

Add two methods to Counter:

1. increment — adds 1 to this.value (hint: this.value add be 1)

2. describe — returns //;Count: [this.value];//

Check

npm test 12

Learn more

• Classes