missing key prop for element in iterator

ambl answered on February 6, 2022 Popularity 9/10 Helpfulness 5/10

answer missing key prop for element in iterator

related Error: Missing "key" prop for element in iterator

Comment

{arr.map((elem, index) => (
	<li key={elem + index}>{elem}</li>
))}

if array elem has id attribute, use it instead of just elem

Popularity 9/10 Helpfulness 5/10 Language javascript

Tags: element iterator javascript key prop

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Contributed on Mar 29 2023

ambl

0 Answers Avg Quality 2/10

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Comment

const peopleCard = this.state.people.map(person => (
  <Col key={person.id} sm="4">
    <PeopleCard person={person} />
  </Col>
));

Popularity 10/10 Helpfulness 4/10 Language typescript

Tags: element

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Contributed on Feb 06 2022

Tiago F2

0 Answers Avg Quality 2/10

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