Revision Quiz: Unit II - JavaScript

Note

Review before quiz: Revision Lecture | Week 6 Content | Week 4 Content | Week 5 Content

Unit II Revision Self-Check

Question 1: Which keyword is preferred when a JavaScript variable should not be reassigned?

Select an item

A. var

B. const

C. define

D. static

Question 2: Which method is commonly used to select an element from the DOM using a CSS selector?

Select an item

A. querySelector()

B. console.log()

C. parseInt()

D. setTimeout()

Question 3: Which operator checks both value and type equality in JavaScript?

Select an item

A. =

B. ==

C. ===

D. :=

Question 4: Which array method returns a new array containing only elements that match a condition?

Select an item

A. forEach()

B. filter()

C. push()

D. join()

Question 5: What does event.preventDefault() do in an event handler?

Select an item

A. To prevent the browser's default action for an event

B. To automatically reload the page

C. To remove the clicked element from the DOM

D. To convert a string to JSON