class component react using state
import React, {Component} from 'react'; import './App.css'; import IconBar from './components/icon-bar'; import Events from './components/events'; class App() extends Component { constructor(props) { super(props) this.state = { mode: null } this.updateMode = this.updateMode.bind(this); } updateMode = (newMode) => { this.setState({mode: newMode}); } return ( <div className="App"> <h1 className="Title">ENAKS</h1> <IconBar onUpdateMode={this.updateMode} mode={this.state.mode} /> <Events /> <div className="mainModeFrame"><p1>{this.state.mode}</p1></div> </div> ); } export default App; Add this to your knowledge