What is React DevTools?
React DevTools is a browser extension that adds Components and Profiler tabs to your DevTools when you are on a React page. It lets you inspect the component tree, view and edit props and state, and profile performance.
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More FAQs in How to Use React DevTools to Debug Components and State
Open the Components tab in React DevTools and select the component. You see its current props and state, which is invaluable for figuring out why it rendered a certain way or why data is missing.
Yes. You can edit state values directly in the Components tab to see how the UI reacts. This lets you test edge cases without modifying your code, which is great for debugging.
It records a render and shows which components rendered, how long they took, and why. It is essential for diagnosing performance problems and unnecessary re-renders, and it can show why a specific component re-rendered.
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