Q1. What are the possible ways to create objects in JavaScript?
There are many ways to create objects in javascript as mentioned below: 1. **Object literal syntax:** The object literal syntax (or object initializer), is a comma-separa...
Technical Question Bank · Peer-Reviewed
Job Interview Questions and Answers Directory
Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (1,100 available).
Active:
Tag: javascript ×
Q2. What is React?
React (aka React.js or ReactJS) is an **open-source front-end JavaScript library** for building user interfaces based on components. It's used for handling the view layer...
Q3. What is a prototype chain?
The prototype chain is a core concept in JavaScript’s inheritance model. It allows objects to inherit properties and methods from other objects. When you try to access a ...
Q4. What are the major features of React?
React offers a powerful set of features that have made it one of the most popular JavaScript libraries for building user interfaces: **Core Features:** - **Component-Base...
Q5. What is the Difference Between call, apply, and bind?
In JavaScript, `call`, `apply`, and `bind` are methods that allow you to control the context (`this` value) in which a function is executed. While their purposes are simi...
Q6. What is JSX?
_JSX_ stands for _JavaScript XML_ and it is an XML-like syntax extension to ECMAScript. Basically it just provides the syntactic sugar for the `React.createElement(type, ...
Q7. What is JSON and its common operations?
**JSON (JavaScript Object Notation)** is a lightweight, text-based data format that uses JavaScript object syntax for structuring data. It was popularized by Douglas Croc...
Q8. What is the difference between an Element and a Component?
**Element:** - A React **Element** is a plain JavaScript object that describes what you want to see on the UI. It represents a DOM node or a component at a specific point...
Q9. What is the purpose of the array slice method?
The `slice()` method in JavaScript is used to extract a section of an array, returning a new array containing the selected elements. It does not modify the original array...
Q10. How to create components in React?
Components are the building blocks of creating User Interfaces(UI) in React. There are two possible ways to create a component. 1. **Function Components:** This is the si...