Component Life Cycle1 리액트 React Components, State, Component Life Cycle 알아보기 App.js import React from "react"; import PropTypes from "prop-types"; // every time set.state -> render -> this.state.1,2,3,0,-1 -> re-render (this.state.count = 1 -> not work) class App extends React.Component { constructor(props) { super(props) console.log("hello"); } state = { count: 0 }; add= () => { this.setState(current => ({ count: current.count + 1 })); }; minus= () => { this.setState(cu.. 2020. 11. 9. 이전 1 다음