However, frontend development is a broad field that includes a variety of approaches and equipment. As a result, the kind of questions used in interviews for front-end developer positions vary and cover a range of topics.
You shouldn’t worry if you’re looking for a job as a front-end programmer and don’t know how to prepare for the interview because this article clarifies all the difficult and perplexing front end developer interview questions that interviewers are most likely to ask.
What is frontend Development?
The area of web development known as frontend development focuses on what users see on their end. It centers on converting the code written by backend developers into a graphical interface and ensuring that the data is presented in a straightforward, understandable style.
Without frontend development, a website or web application would only display some confusing codes. People without a background in coding can easily comprehend and use web applications and web pages, thanks to frontend developers.
The things you see when you visit Canva, Facebook, Google Apps, and other websites are the results of the collaboration between frontend and backend developers.
Frontend Developer Interview Questions and Answers
Question 1: What is Lazy loading?
Answer: One method for loading content on the browser according to the user’s needs is lazy loading. This optimizes the use of servers and resources. eCommerce platforms like Flipkart and Amazon provide a practical illustration of this. Only the specifics (price, picture, important characteristics) for the elements that are only visible on the first fold are displayed when you search for a specific product on these websites. The elements below continue to load as and when required as you scroll down.
Question 2: What is React JS?
Using inline scripts makes your HTML code heavier, whereas using external scripts shrinks the HTML file size and speeds up webpage rendering.
Question 4: Describe the advantages of REST web services?
Answer: Some benefits of REST web services are listed below:
- The learning curve is easy because it uses the HTTP protocol.
- No agreement is made between the server and the client, hence the program is loosely connected.
- Three RESTful techniques are easily testable on the browser.
- It also supports a variety of transmission technologies, including those for text, JSON, XML, and image data.
- It’s a simple protocol.
Question 5: What is the purpose of using doctypes in HTML?
Answer: In an HTML page, you have probably seen a declaration before the tag. To inform the browser which version of HTML is being used on the page, use the element in HTML. The name of this document type declaration is (DTD).
It is just a directive to the browser that specifies the type of page; it is not strictly a tag or element. It is a null element that lacks a closing tag and cannot contain any content. The HTML version affects the doctype declaration.
Question 6: What is Node.JS for us?
Question 7: Mention the difference between MySQL and MongoDB?
Answer: MySQL: SQL is used as a standard language by MySQL, a Relational Database Management System (RDBMS), to manage its database. MySQL uses a structure akin to a table to store data, just as other relational database management systems.
MongoDB: MongoDB is a NoSQL database that stores data pieces in a JSON-like manner. The MongoDB Query Language should be used by the programmer to access and alter data in MongoDB (MQL)
With the help of these thoughtful front-end developer interview questions, you are now well-prepared to formulate and respond to any front-end development-related inquiries.
However, the only portion of the interview covered by these front-end developer interview questions is the technical one. The technical proficiency of a candidate is only one aspect of an interview. As a front-end developer, you should work on your soft skills and social life in addition to preparing for these front-end developer interview questions.
As a recruiter, it is your duty to inquire about a candidate’s time management, personal and team projects, and other topics aside from those covered in the front-end interview.