Oppiskele Class Constructors | ES6 Class Fundamentals

When you create a new object from a class in JavaScript, you often want to set up its initial state—such as assigning values to its properties. This is where the constructor method comes in. The constructor is a special method inside a class definition that is automatically called when you use the new keyword to create an instance of the class. You can use it to set up the properties of the object with specific values, usually by passing arguments to the constructor when creating the object.


              12345678910
            
class Person {
  constructor(name, age) {
    this.name = name;
    this.age = age;
  }
}

const user = new Person("Alice", 30);
console.log(user.name); // "Alice"
console.log(user.age); // 30

Oliko kaikki selvää?

Kiitos palautteestasi!

Osio 1. Luku 4

Kysy tekoälyä

Kysy mitä tahansa tai kokeile jotakin ehdotetuista kysymyksistä aloittaaksesi keskustelumme

Awesome!

Completion rate improved to 6.25

Pyyhkäise näyttääksesi valikon


              12345678910
            
class Person {
  constructor(name, age) {
    this.name = name;
    this.age = age;
  }
}

const user = new Person("Alice", 30);
console.log(user.name); // "Alice"
console.log(user.age); // 30

Oliko kaikki selvää?

Kiitos palautteestasi!

Osio 1. Luku 4