Technical Question Bank · Peer-Reviewed
Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (1,236 available).
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...
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...
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...
The `get` keyword is used to define a method that retrieves the value of a property. When the property is accessed, the `get` method is automatically called, and its retu...
The `set` keyword is used to define a method that sets the value of a property. When the property is assigned a value, the `set` method is automatically called, and it ca...
functions and classes are both important tools in JavaScript for defining reusable code, but they serve different purposes. Functions are used to encapsulate logic and pe...
In JavaScript, an abstract class is a blueprint for creating other classes that share some common properties and methods. However, unlike regular classes, abstract classe...
Classes and interfaces are both used in JavaScript to define object types, but serve different purposes. A class defines a blueprint for creating objects that have proper...
In JavaScript, a prototype is an object that contains properties and methods that can be shared by all objects created with the same constructor function. It helps to red...
The main difference between prototypal and classical inheritance is that prototypal inheritance allows objects to inherit properties and methods directly from other objec...
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