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Test: ReactJS Test

Question 31: Prev Next Hide answers

Which of the following is true about keys in React?

Note: There may be more than one right answer.
If key is present, is always supplied directly to the component as property.
2 votes
React will use the key values to keep track of each element
1 votes
Setting the key value will keep components uniquely identified after the change
1 votes
React keys are useful when working with dynamically created components
1 votes
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