<div>What do you call the message wrapped in curly braces below?</div> <div> <pre class=language-javascript><code>let message = 'Hi there'; const element = <p>{message}</p>;</code></pre> </div>

ReactJS - Quiz(MCQ)

What do you call the message wrapped in curly braces below?

let message = 'Hi there';
const element = <p>{message}</p>;

a JS function

a JS element

a JSX wrapper

a JS expression

Correct Answer : a JS expression

Recent Updates in React.JS

Q .

What do you need to change about this code to get it to run?

class clock extends React.Component {
  render() {
    return <h1>Look at the time: {this.props.time}</h1>;
  }
}

Remove this

Capitalize clock

Remove the render method

Add quotes around the return value

Correct Answer : Capitalize clock

Q .

Which Hook could be used to update the document's title?

useEffect(function updateTitle() { document.title = name + ' ' + lastname; });

useEffect(() => { title = name + ' ' + lastname; });

useEffect(function updateTitle() { name + ' ' + lastname; });

useEffect(function updateTitle() { title = name + ' ' + lastname; });

Correct Answer :

useEffect(function updateTitle() { document.title = name + ' ' + lastname; });