Managing interactions

Local state stores a value that changes during use. Updating state triggers a render; do not mutate the existing object directly.

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Managing interactions

Local state stores a value that changes during use. Updating state triggers a render; do not mutate the existing object directly.

Start with a minimal example, observe the result, then change one thing at a time. This helps distinguish the intended rule from accidental behavior.

Key points

Choose explicit names.
Verify the result with a simple case.