function NotificationMsg({ text, state }) {    return (      <div>        {{          info: <Message text={text} />,          warning: <Message text={text} />,        }[state]}      </div>    );

import React, { Component } from 'react';    // Message Component   function Message(props)   {       if (props.isLoggedIn)           return <h1>Welcome Back!!!</h1>;       else          return <h1>Please Login First!!!</h1>;   }   // Login Component   function Login(props)   {      return(              <button onClick = {props.clickInfo}> Login </button>          );   }    // Logout Component   function Logout(props)   {       return(              <button onClick = {props.clickInfo}> Logout </button>          );   }   class App extends Component{       constructor(props)       {           super(props);            this.handleLogin = this.handleLogin.bind(this);            this.handleLogout = this.handleLogout.bind(this);         this.state = {isLoggedIn : false};       }      handleLogin()       {           this.setState({isLoggedIn : true});       }       handleLogout()       {           this.setState({isLoggedIn : false});       }       render(){           return(               <div>           <h1> Conditional Rendering Example </h1>                  <Message isLoggedIn = {this.state.isLoggedIn}/>                               {                       (this.state.isLoggedIn)?(                       <Logout clickInfo = {this.handleLogout} />                       ) : (                       <Login clickInfo = {this.handleLogin} />                       )                   }               </div>                     );       }   }   export default App;    Output:When you execute the above code, you will get the following screen.

.then((response) => { if (!response.ok) { throw new Error('Network response was not ok'); } return response.json(); }) .then((data) => { console.log('Success:', data); }) .catch((error) => { console.error('Error:', error); }); };

introduction to express.js

What is the output of the following code snippet?function ParentComponent() { const data = { name: "John Doe", age: 30 }; return ( <div> <ChildComponent data={data}> <h3>This is a child element</h3> </ChildComponent> </div> ); } function ChildComponent(props) { const { name, age } = props.data; return ( <div> <h2>Name: {name}</h2> <h2>Age: {age}</h2> {props.children} </div> ); }AName: John Doe Age: 30This is a child elementBName: undefined Age: undefinedThis is a child elementCName: null Age: nullThis is a child elementDSyntax error

import React, { Component } from 'react';  import { render } from 'react-dom';    const TextInput = React.forwardRef((props, ref) => (    <input type="text" placeholder="Hello World" ref={ref} />  ));    const inputRef = React.createRef();    class CustomTextInput extends React.Component {    handleSubmit = e => {      e.preventDefault();      console.log(inputRef.current.value);    };    render() {      return (        <div>          <form onSubmit={e => this.handleSubmit(e)}>            <TextInput ref={inputRef} />            <button>Submit</button>          </form>        </div>      );    }  }  export default App;