JavaScript Classes

JavaScript classes provide a clear and structured way to create objects and handle inheritance. Introduced in ES6, class syntax is syntactical sugar over prototype-based inheritance.

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Syntax of a JavaScript Class

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Example 1: Creating a Class and an Object

• The constructor() method runs when a new object is created.
• this refers to the current object instance.

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Example 2: Adding Multiple Methods

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Inheritance Using extends

Create a subclass that inherits from a parent class.

Example 3: Inheritance

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Using super Keyword

Use super() to call the parent class constructor or methods.

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Static Methods

Static methods belong to the class itself, not instances.

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Key Takeaways

• Classes are blueprints for creating objects.
• Use constructor() for initialization.
• Define methods inside the class body.
• Use extends for inheritance.
• Use super() to call parent constructor or methods.
• Static methods belong to the class, not instances.