PD
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PD
ДБ
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{array.map((item, index) => (
<Jopa
prop="42"
callback={onChange}
onClick={handleClick(index)}
/>
)}I
PD
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PD
PD
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PD

VS

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{array.map((item, index) => (
<Jopa
prop="42"
callback={onChange}
onClick={handleClick(index)}
/>
)}{array.map((item, index) => (
<Jopa
key={item.id}
prop="42"
callback={onChange}
onClick={handleClick(index)}
/>
)}I
{array.map((item, index) => (
<Jopa
key={item.id}
prop="42"
callback={onChange}
onClick={handleClick(index)}
/>
)}I