What are the best practices for using keys in React?
An example of an AI chatbot conversation about best practices for using keys in React components.
What are the best practices for using keys in React?
Using unique keys helps React identify which items have changed, are added, or are removed. Always use stable IDs.
Can you give me an example of a good key?
Sure! If you're rendering a list of users, use a unique user ID as the key, like user.id.
What happens if I use the index of the array as a key?
Using the index can lead to issues with component state and performance, especially if the list changes.
Are there any exceptions where using the index is acceptable?
Yes, if the list is static and will not change, using the index can be acceptable.
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