Vue · Senior · Question 23 of 75

Why use `useId()` (3.5+) for `id`/`aria-*` attributes?

✓Correct answer: It generates IDs that are unique per app and stable between server and client, avoiding hydration mismatches
2It creates database IDs
3It encrypts element IDs

Explanation

A random or incrementing module counter produces different values on server and client. useId ties the ID to the component's position in the tree.

Further reading

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