React·Beginner·Conceptual·1 min read

What React hook is commonly used to read an uncontrolled input's value only when needed, without subscribing to every change?

Short interview answer

useRef — it creates a persistent reference to the DOM node whose .value can be read on demand, such as inside a submit handler, without causing any re-render when the underlying DOM value changes.

Key takeaway

Explain the underlying mental model clearly, then support it with a concrete example and its trade-offs.

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What React hook is commonly used to read an uncontrolled input's value only when needed, without subscribing to every change?

Key takeaway

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