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20 Common JavaScript Interview Questions
Get familiar so they don’t catch you off guard during the interview
An interview is an important part of the hiring process. It gives insights about skillset and knowledge, and the ability of an individual to take on challenging tasks. It is also one of the most reliable ways for an employer to filter out unsuitable candidates for a job post.
As a JavaScript developer, you must prepare yourself before appearing at an exam or an interview. It will increase your chances of being hired by a reputed company.
Now, you might be wondering where to start the preparation or what questions they will ask in the interview. To help you out, I’ve compiled a list of commonly asked JavaScript interview questions. Each of these questions has a brief answer which you can review below.
In the end, you will be a bit more confident to answer any question from your interviewer. Without further ado, let’s get started.
1. What Is JavaScript?
JavaScript is a scripting language created by Netscape in 1995. It was initially used on the popular web browser Netscape Navigator. But these days we can use it for client-side as well as server-side application development.
Well, I don’t think anyone will ask this, but we shouldn’t forget where JavaScript comes from.
2. List Some Advantages of JavaScript
- JavaScript can work offline inside the web browser.
- It supports multiple programming paradigms. For example, we can make use of object-oriented, functional, and imperative programming concepts.
- It has the biggest collection of open source libraries and frameworks.
- JavaScript is capable of creating online/offline games, desktop software, websites, and mobile apps.
- No need to learn separate programming languages to create on the front end and back end of a website. JavaScript is supported on all major web browsers, and it can run on the server using Node.js.
- It is an interpreted language, meaning that we don’t have to build or compile its code before use. JavaScript instructions…
