Course: JavaScript

Welcome to the JavaScript Const Quiz.

This quiz checks your understanding of the const keyword in JavaScript and how it is used to declare variables whose values should not be reassigned. The const keyword is an important part of modern JavaScript and helps developers write safer and more predictable code. Knowing when and how to use const correctly improves code readability and reduces bugs in real-world applications. Read the instructions carefully before you begin.

Quiz Format

• Total Questions: 10

• Difficulty Level: Medium

• Question Type: Multiple Choice

• Each question has one correct answer.

Timing

• Total time limit: 5 minutes

• Move through each question with steady focus and avoid spending too long on any single one.

Scoring

• Each correct answer = +1 point

• No negative marking

• Maximum Score = 10 points

How to Play

• Read each question carefully and review any JavaScript code shown in the question.

• Pay attention to how const variables are declared and initialized.

• Understand that const variables cannot be reassigned after declaration.

• Focus on block scope behavior of const variables.

• Learn how const works with objects and arrays, including mutable properties.

• Understand common mistakes such as declaring const without initialization.

• Compare const with let to know when each should be used.

• Choose the option you think is correct based on how JavaScript actually handles const.

• Once you move to the next question, you won’t be able to go back.

Rules

• Don’t refresh or close the quiz window during the attempt.

• Avoid external notes, books, or online help while answering.

• Keep an eye on the timer throughout the quiz.

Before You Start

• You can review the topic here: JavaScript Const Tutorial

After Submission

• Your score will appear instantly.

• You can check the correct answers to understand mistakes and improve your use of the const keyword in real JavaScript programs.