Q. What should be used as a key in a list?

किसी सूची में कुंजी के रूप में क्या उपयोग किया जाना चाहिए?

A
Index of the item
B
A unique ID
C
The array length
D
Any random value

Explanation

Explanation will be available soon. Please stay tuned.

व्याख्या जल्द ही उपलब्ध होगी। कृपया बने रहें।

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Event Handling State, Lifecycle Methods Error Handling, Debugging, Optimization Functional vs Class Components, Props Lists and Keys & Importance of Keys

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