React · Junior · Question 67 of 75

How does `defaultValue` differ from `value` on an input?

✓Correct answer: defaultValue sets only the initial value of an uncontrolled input; value makes it controlled by React state
2They are synonyms
3defaultValue updates the input whenever it changes

Explanation

Uncontrolled inputs keep their value in the DOM; you read it on submit (e.g. via FormData). Changing defaultValue later has no effect.

Further reading

react.dev: <input> (controlled inputs) ↗

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