Skip to main content

NEWNew questions added!Explore now

All practice questions Coding challenges React & Next.js questions HTML & CSS questions All quizzes

Complete simple social tasks to unlock this offer

Pricing Get full accessSign in

Software Engineering Docs

Practice

All questions
All quizzes
All articles

Explore

Dashboard
Time-savers
Frameworks / languages

Account

Sign in
Sign up

Company

About FrontendPro
Editorial team
Editorial policy
Pricing

© 2026 frontendpro. All rights reserved.

iteration

JavaScriptIterationMedium

Which loop iterates over an object's enumerable properties, including inherited ones?