What is JSX in React?

A JavaScript XML-like syntax
A database query language
A style sheet language
JavaScript eXtension

JSX stands for JavaScript XML. It allows developers to write HTML-like code within their JavaScript code. React then converts these JSX expressions into actual JavaScript objects before rendering them in the DOM.

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You're building a test suite for a React application that communicates with an external API. How can you ensure that actual API calls are not made during the test runs?

How does Immutable.js ensure that data remains immutable?

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What is JSX in React?

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