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QusWhat is React.js? QusReact.js क्या है?


A. Open-source JavaScript back-end library
B. JavaScript front-end library to create a database
C. Free and open-source JavaScript front-end library
D. None of the mentioned


Solution
C. Free and open-source JavaScript front-end library



Explanation
React.js is a free and open-source JavaScript front-end library for creating user interfaces and UI components. It’s also referred to as React or ReactJS.
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