define function in functional component react code example

Example 1: defining functions in react

export default class Archive extends React.Component { 

    saySomething(something) {
        console.log(something);
    }

    handleClick(e) {
        this.saySomething("element clicked");
    }

    componentDidMount() {
        this.saySomething("component did mount");
    }

    render() {
        return <button onClick={this.handleClick.bind(this)} value="Click me" />;
    }
}

Example 2: react function component

function Welcome(props) {
  return <h1>Hello, {props.name}</h1>;
}

Example 3: react functional component example

function Greeting(props) {
  
  return <h1> Hello, {props.name}! </h1>
  
}

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