React.js: What is it? React.js is a free and open-source JavaScript library used to design user interfaces. The main goal of this library is to resolve the problem of partially updating web pages. It is important when creating single-page applications. Leaders in technology like Facebook and Instagram employ React.js. Absolutely, React.js aids in the resolution of numerous development issues. As a result, many companies decide to employ React developers. This essay will cover why companies of all sizes need such specialists, the abilities that successful junior, middle, and senior React.js developers require, how to locate the top professionals, and—most importantly—how to hire React.js developers . But let’s start with the basics: What exactly is a React developer?
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