Q2621. What is a JSON?
JavaScript Object Notation (JSON) is a standard text-based format for representing structured data based on JavaScript object syntax. It is commonly used for transmitting...
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Q2622. What is Class in JavaScript?
Class is a template that can be used to create objects that share the same properties and methods. When an object is created from a class, it is called an instance of tha...
Q2623. What is the difference between a static method and an instance method in a class?
An instance method is a method that can be called on an instance of a class, and it can access and modify instance-specific data, like properties of the object. A static ...
Q2624. What is "this" in JavaScript Classes?
In JavaScript classes, `this` refers to the current object that is being worked on. It's like a placeholder for the object. For example, if you have a class that creates ...
Q2625. Can you explain the concept of method overriding in a class in JavaScript?
Method overriding is a concept in JavaScript where a subclass can provide its own implementation of a method that is already defined in the parent class. To override a me...
Q2626. What is composition in classes in JavaScript?
Composition in class JS is a technique of building complex classes by combining smaller, more focused classes that represent specific behaviors or properties.Composition ...
Q2627. What is inheritance in classes in JavaScript?
Inheritance in classes in JavaScript is the ability to create a new class based on an existing class. The new class inherits all the properties and methods of the existin...
Q2628. What is the `extends` keyword in JavaScript, and how is it used for inheritance?
The `extends` keyword is used in JavaScript to create a new class that inherits from an existing class. It is used in the class declaration syntax, like this: ``` class C...
Q2629. What is the purpose of `super()` in JavaScript classes?
The `super()` keyword in JavaScript is used to call a method or constructor of a parent class from within a subclass. It allows a subclass to inherit and use functionalit...
Q2630. What is a private class field in JavaScript?
A private class field in JavaScript refers to a class field that is only accessible within the class in which it is defined. It cannot be accessed or modified from outsid...