Modern JavaScript ES6+ | MCQs & Concepts module 07

1. What does ES6 stand for?

a) ECMAScript 5
b) ECMAScript 6
c) Enhanced Script 6
d) Easy Script 6

2. Which symbol is used for template strings in JavaScript?

a) " "
b) ' '
c) (backticks)
d) ( )

3. What is the correct way to insert a variable in a template string?

a) {name}
b) $name
c) ${name}
d) #{name}

4. What does the spread operator (...) do?

a) Combines strings
b) Copies or expands elements
c) Deletes data
d) Loops through arrays

5. Which symbol is used for both spread and rest operators?

a) ***
b) ###
c) ...
d) @@

6. What is the rest operator mainly used for?

a) Splitting arrays
b) Collecting multiple values into one
c) Sorting data
d) Removing elements

7. What is destructuring used for?

a) Creating objects
b) Extracting values from arrays or objects
c) Deleting variables
d) Merging arrays

8. Which is a correct array destructuring example?

let [a, b] = [1, 2];

a) a = 1, b = 2
b) a = [1], b = [2]
c) a = 2, b = 1
d) Error

9. Which keyword is used to export code from a module?

a) send
b) module
c) export
d) share

10. Which keyword is used to import code from another module?

a) include
b) require
c) import
d) fetch

11. What is the main benefit of using JavaScript modules?

a) Faster internet
b) Better code organization
c) Bigger files
d) More errors

12. Which keyword is used to create a class in JavaScript?

a) object
b) function
c) class
d) constructor

13. Which method runs automatically when a class object is created?

a) start()
b) init()
c) constructor()
d) create()

14. Which OOP concept allows one class to inherit another class?

a) Encapsulation
b) Polymorphism
c) Inheritance
d) Abstraction

15. ES6 features are mainly used to:

a) Slow down JavaScript
b) Make code more complex
c) Write cleaner and modern JavaScript
d) Remove old JavaScript

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