<div>You have written the following code but nothing is rendering. How do you fix this problem?</div> <div> <pre class=language-javascript><code>const Heading = () => { <h1>Hello!</h1>; };</code></pre> </div>

ReactJS - Quiz(MCQ)

You have written the following code but nothing is rendering. How do you fix this problem?

const Heading = () => {
  <h1>Hello!</h1>;
};

Add a render function

Surround the h1 in a div.

Move the h1 to another component.

Change the curly braces to parentheses or add a return statement before the h1 tag.

Correct Answer : Change the curly braces to parentheses or add a return statement before the h1 tag.

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; });