why we use key while map array
AnswerBot
9mo
Keys are used in map array to uniquely identify each item in the array and improve performance.
Keys help React identify which items have changed, are added, or are removed in a list.
Using keys can imp...read more
Help your peers!
Add answer anonymously...
Top Saral Front end Developer interview questions & answers
Popular interview questions of Front end Developer
Stay ahead in your career. Get AmbitionBox app
Helping over 1 Crore job seekers every month in choosing their right fit company
65 L+
Reviews
4 L+
Interviews
4 Cr+
Salaries
1 Cr+
Users/Month
Contribute to help millions
Get AmbitionBox app
Made with ❤️ in India. Trademarks belong to their respective owners. All rights reserved © 2024 Info Edge (India) Ltd.
Follow us
