Comments (3)
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from react.
Problem is solved by updating state in different way.
setOriginal(prevState =>
prevState.map((x, i) =>
i == 0 ? {...x, name: e.target.value } : x
)
)
from react.
To get to the root of your problem, in JavaScript objects are passed by reference not by value. So when you call submit
you're setting the value of copy
to a reference of the original
object.
You can test it by adding this snippet to your sandbox:
useEffect(() => {
console.log("original[0] === copy[0]", original[0] === copy[0]);
}, [original[0], copy[0]]);
Initially original[0] === copy[0]
will be false. After you submit, original[0] === copy[0]
will be true.
from react.
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from react.