OpenTechBook
  • Home
  • Open Books
    • All Open Books

    • Free eBooks
    • Free Magazines
    • Free Journals

    • Submit an Open Book
  • Quizzes
Home » Quiz » ES6 Quiz

What types of collections can the for...of loop iterate over in JavaScript?

Difficulty level
  • Arrays
  • Objects
  • Strings
  • All of the above
The for...of loop can iterate over iterable objects like arrays, strings, maps, sets, etc. However, it does not work with non-iterable objects like plain objects (use for...in for objects).
Add your answer
Loading...
Facebook Twitter Linkedin Reddit Pinterest
ES6 Quiz
Quiz
Which method is essential for an object to be an iterator?
In a WeakMap, keys must be ________ and not primitive values.

Related Quiz

  • When a function execution completes, it is removed from the __________.
  • What happens when you try to create a new Symbol using the new keyword?
  • Can Promises help in avoiding callback hell in asynchronous JavaScript code?
  • In an application dealing with an array of user objects, which higher-order function would be best for filtering users based on specific criteria?
  • What potential issues might arise from using mixins in ES6, and how can they be mitigated?

Leave a commentCancel

Your email address will not be published. Required fields are marked *

Hot Quiz

PHP QuizMachine Learning QuizReact.js QuizCyber Security QuizPython QuizNode.js QuizASP.NET Core QuizData Science Statistics QuizCSS QuizETL Testing QuizADO.NET QuizCheckpoint QuizServlet QuizData Modelling QuizAPI Testing QuizDatabase Testing QuizAlgorithm QuizBootstrap QuizComputer Science QuizCommvault Quiz
Copyright © 2025 Open Tech Book
  • About
  • Contact
  • FAQ
  • DMCA
  • Disclaimer
  • Privacy Policy