Toggle example in react js

• Create Components folder under src folder
• Add ToggleEXP.js file and add below Code

import React from "react";

class ToggleEXP extends React.Component {

constructor(props) {

super(props);

this.state = { isToggleOn: true };

}

handleClick = () => {

this.setState(prevState => ({

isToggleOn: !prevState.isToggleOn

}));

};

render() {

return (

<button onClick={this.handleClick}>

{this.state.isToggleOn ? "ON" : "OFF"}

</button>

);

}

}

export default ToggleEXP;

• Open App.js file and update code as below

import React from "react";

import ReactDOM from "react-dom";

import ToggleEXP from "./components/ToggleEXP";

function App() {

return (

<div className="App">

<ToggleEXP />

</div>

);

}

const rootElement = document.getElementById("root");

ReactDOM.render(<App />, rootElement);

Output