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[React] Key 값으로 출력하기FRONT-END/React 2020. 11. 5. 12:16
import React from 'react' import './App.css' import Counter from './Counter.js' import MyName from './MyName' export default class App extends React.Component{ state = { idx:7700, nick:'kim', idols:['orange','red','pink','black'], } render(){ let arr = this.state.idols; let str = []; // arr를 담아줄 배열 추가 //key값 사용 for(let i=0; i