Mastering React in 8 weeks

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

Mastering React in 8 weeks - Day 2

Email *

What is JSX?

1 point

A syntax extension for JavaScript that allows you to write HTML-like code in your JavaScript files.

A transpiler that converts JSX into regular JavaScript code.

A library for building web and mobile applications.

A virtual DOM (Document Object Model) element.

How do you create a JSX element that represents an h1 element with the text "Hello, world!"?

1 point

const element = <h1>Hello, world!</h1>;

const element = React.createElement('h1', null, 'Hello, world!');

const element = { type: 'h1', content: 'Hello, world!' };

const element = '<h1>Hello, world!</h1>';

What is the purpose of the key the attribute in a JSX element?

1 point

It specifies a unique identifier for the element.

It specifies the element's class name.

It specifies the element's style.

It specifies the element's content.

How do you use a React component in a JSX element?

1 point

By enclosing the component name in quotes.

By enclosing the component name in curly braces.

By enclosing the component name in parentheses.

By enclosing the component name in angled brackets.

What is the purpose of the root.render function?

1 point

It renders a JSX element to the DOM (Document Object Model).

It transpires JSX into regular JavaScript code.

It creates a virtual DOM element.

It installs dependencies for a React application.

How do you nest JSX elements?

1 point

By enclosing them in quotes.

By enclosing them in curly braces.

By enclosing them in parentheses.

By enclosing them in brackets.

How do you use a JavaScript expression in a JSX element?

1 point

By enclosing it in quotes.

By enclosing it in curly braces.

By enclosing it in parentheses.

By enclosing it in brackets

How do you use loops in JSX?

1 point

By using while loops.

By using for loops.

By using map functions.

By using reduce functions.

How do you use conditional rendering in JSX?

1 point

By using if statements.

By using switch statements.

By using ternary operators.

By using for loops

How do you pass an attribute to a JSX element?

1 point

By using camelCase and enclosing the attribute value in quotes.

By using hyphen-separated names and enclosing the attribute value in quotes.

By using camelCase and enclosing the attribute value in curly braces.

By using hyphen-separated names and enclosing the attribute value in curly braces.

A copy of your responses will be emailed to the address you provided.

Submit

Clear form

reCAPTCHA

Privacy Terms

This content is neither created nor endorsed by Google. Report Abuse - Terms of Service - Privacy Policy

Forms