Web Reference: Jun 3, 2020 · ### Step 12 in the "React, TypeScript, and TDD" tutorialFollow the React pattern of container/presentation components by refactoring the code and tests.00:00... React uses a special syntax known as JavaScript XML (JSX). JSX allows you to integrate both HTML (or custom components you might create) and JavaScript into a single file or even single line of code. React JS is a JavaScript library for building user interfaces. It uses a virtual DOM to efficiently update the real DOM and render user interfaces from components.
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