{"id":92489,"date":"2022-07-25T05:32:28","date_gmt":"2022-07-25T05:32:28","guid":{"rendered":"https:\/\/www.fita.in\/?p=92489"},"modified":"2023-10-09T06:37:23","modified_gmt":"2023-10-09T06:37:23","slug":"reactjs-interview-questions-and-answers","status":"publish","type":"post","link":"https:\/\/www.fita.in\/reactjs-interview-questions-and-answers\/","title":{"rendered":"ReactJs Interview Questions and Answers"},"content":{"rendered":"

ReactJs is a library of JavaScript code used to make user interfaces. In the past few years, ReactJs has become more and more popular, and for good reason: it is a powerful tool that makes making user interfaces fast and easy. ReactJs is based on React, a library for building platforms that were made by engineers at Facebook.\u00a0<\/span><\/p>\r\n

ReactJs Interview Questions and Answers from FITA Academy can give the best resources for ReactJs interview preparation. If you have completed your <\/span>ReactJs Training In Chennai<\/b><\/a> then you can get many job opportunities in front of you. We have given the top questions and answers which will help you to become a successful ReactJs Developer.<\/span><\/p>\r\n

In this article, we\u2019ll provide an introduction to ReactJS, including interview questions and answers that you might encounter when preparing for a job interview with ReactJs.<\/span><\/p>\r\n\r\n

\r\n
\r\n
\r\n
\r\n

<\/i><\/i>Q1<\/span>. What is React?<\/a><\/h4>\r\n<\/div>\r\n
\r\n
\r\n

React is a declarative programming language for creating user interfaces. It lets programmers write code only once and use it on many different platforms. This facilitates application maintenance and updates.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n

\r\n
\r\n

<\/i><\/i>Q2<\/span>. Why React?<\/a><\/h4>\r\n<\/div>\r\n
\r\n
\r\n

React is a toolkit for building dynamic user interface components. Developers can build rich user experiences without worrying about browser inconsistencies.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n

\r\n
\r\n

<\/i><\/i>Q3<\/span>. How does React work?<\/a><\/h4>\r\n<\/div>\r\n
\r\n
\r\n\r\nThe core concept behind React is the idea of virtual DOM. A virtual DOM tree is a representation of the real DOM tree. Every change you make to the real DOM gets reflected in the virtual one. Consider it a snapshot of the current state of the document.\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n
\r\n
\r\n

<\/i><\/i>Q4<\/span>. What are the advantages of using React?<\/a><\/h4>\r\n<\/div>\r\n
\r\n
\r\n