ReactJS - Keys
Keys avail React identify which items have transmuted, are integrated, or are abstracted. Keys should be given to the elements inside the array to give the elements a stable identity. For more topics, click below link: React JS Setup, Installation, and First React Project : part 1 ReactJS - JSX : part 2 ReactJS - Components : part 3 ReactJS - State and Props : part 4 ReactJS - Component API : part 5 ReactJS - Events : part 6 Reactjs - Form : part 7 ReactJS - Bootstrap - Buttons : part 8 ReactJS - Bootstrap - Table : part 9 ReactJS - Keys : part 10 CRUD React J+Node JS+Express+MongoDB CRUD:MERN Stack development Kotlin + Spring Boot + React JS + MongoDB CRUD - Full stack development React JS+SpringBoot+RDBMS-CRUD:Full-stack development foundation React.js + Python + MongoDB CRUD application Example: import React from 'react' ; class App extends React.Component { constructor() { super(); this .state = { data: [ {