What are keys in React components?
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What are keys in React components?
Keys are unique identifiers for elements in a list, helping React optimize rendering.
Why are keys important for performance?
Keys help React identify which items have changed, are added, or are removed, improving rendering efficiency.
Can you give an example of how to use keys?
Sure! When rendering a list, you can use the map function and assign a unique key to each element, like this: <div key={item.id}>{item.name}</div>.
What happens if I don't use keys?
Without keys, React may re-render all items in the list, leading to performance issues and potential UI bugs.
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