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How do ES6 classes work in JavaScript?

Asked on Jul 26, 2025

Answer

ES6 classes in JavaScript provide a more intuitive syntax for creating objects and handling inheritance, similar to class-based languages like Java or Python.

<!-- BEGIN COPY / PASTE -->
        class Animal {
            constructor(name) {
                this.name = name;
            }

            speak() {
                console.log(`${this.name} makes a noise.`);
            }
        }

        class Dog extends Animal {
            speak() {
                console.log(`${this.name} barks.`);
            }
        }

        const dog = new Dog('Rex');
        dog.speak(); // Output: Rex barks.
        <!-- END COPY / PASTE -->

Additional Comment:

The "class" keyword is used to define a class.
"constructor" is a special method for creating and initializing objects.
"extends" is used for inheritance, allowing a class to inherit properties and methods from another class.
Methods inside classes do not require the "function" keyword.
The "super" keyword can be used to call the constructor or methods of the parent class.

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Ask any question about JavaScript here... and get an instant response.

How do ES6 classes work in JavaScript?

Asked on Jul 26, 2025

Answer

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