OpenTechBook
  • Home
  • Open Books
    • All Open Books

    • Free eBooks
    • Free Magazines
    • Free Journals

    • Submit an Open Book
  • Quizzes
Home » Quiz » Node.js Quiz

In JavaScript, the Symbol data type was introduced in ________.

Difficulty level
  • ECMAScript 2015 (ES6)
  • JavaScript 1.5
  • Node.js v10
  • ESNext
The Symbol data type was introduced in ECMAScript 2015 (ES6). It allows you to create unique and immutable values that can be used as object property keys.
Add your answer
Loading...
Facebook Twitter Linkedin Reddit Pinterest
Node.js Quiz
Quiz
You are developing a suite of unit tests for a service that interacts with an external API. How would you employ mocking and stubbing to ensure the tests are isolated and reliable?
How does denormalization in database schema design affect data redundancy and read performance?

Related Quiz

  • What is the role of the extends property in an ESLint configuration file?
  • You are tasked with optimizing the build process of a Node.js application. How can the scripts section in the package.json file aid in automating and enhancing the build process?
  • You are tasked with developing a real-time notification system in Node.js. Which feature of the Events module would be most beneficial in implementing this?
  • The ______ command can be used to update the package.json file to match the actual versions installed in the node_modules directory.
  • What is the primary use of the spread operator in JavaScript?

Leave a commentCancel

Your email address will not be published.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

Hot Quiz

Python QuizPHP QuizServlet QuizData Analyst QuizAppium QuizSpring Boot QuizADO.NET QuizAPI Testing QuizNode.js QuizDatabase Testing QuizAWS Lambda QuizAutomation Testing QuizData Science Statistics QuizWeb Services QuizSoftware Testing QuizC Language QuizR Programming QuizC++ QuizBootstrap QuizAlgorithm Quiz
Copyright © 2024 Open Tech Book
  • About
  • Contact
  • FAQ
  • DMCA
  • Disclaimer
  • Privacy Policy