Notice: This page requires JavaScript to function properly.
Please enable JavaScript in your browser settings or update your browser.
学ぶ Class Constructors | ES6 Class Fundamentals
JavaScript Classes and OOP Foundations

bookClass Constructors

メニューを表示するにはスワイプしてください

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
copy
question mark

What is the main purpose of the constructor method in an ES6 class?

正しい答えを選んでください

すべて明確でしたか?

どのように改善できますか?

フィードバックありがとうございます!

セクション 1.  4

AIに質問する

expand

AIに質問する

ChatGPT

何でも質問するか、提案された質問の1つを試してチャットを始めてください

セクション 1.  4
some-alt