30 JavaScript Questions Quiz 0% 1 Report a question Table of Contents ToggleReport a questionLike this: What's wrong with this question? You cannot submit an empty report. Please add some details. O0ps! Times Up! JavaScript (JS) Java Script Questions For Beginners Check Your ability! Click on Start Button, Now!! Login Here. NameEmail 1 / 30 Category: Easy Level 1. Which operator checks value and type? a. == b. = c. === d. != 2 / 30 Category: Easy Level 2. Which symbol is used for single-line comments? a. <!-- --> b. // c. /* */ d. # 3 / 30 Category: Easy Level 3. Which attribute specifies the JavaScript file? a. link b. src c. href d. file 4 / 30 Category: Easy Level 4. Which method joins array elements? a. concat() b. join() c. merge() d. connect() 5 / 30 Category: Easy Level 5. Which keyword declares a constant? a. var b. let c. const d. constant 6 / 30 Category: Easy Level 6. Which method selects element by ID? a. getElement() b. getElementById() c. getId() d. selectId() 7 / 30 Category: Easy Level 7. Which method selects elements by class name? a. getClass() b. getElementsByClassName() c. getClassName() d. selectClass() 8 / 30 Category: Easy Level 8. Which method displays an alert box? a. alert() b. msg() c. popup() d. box() 9 / 30 Category: Easy Level 9. <script> tag is not used to include JavaScript in HTML? a. True b. False 10 / 30 Category: Easy Level 10. Which object represents the browser window? a. document b. screen c. window d. navigator 11 / 30 Category: Easy Level 11. Which method adds an element at the end of an array? a. pop() b. push() c. shift() d. unshift() 12 / 30 Category: Easy Level 12. Which operator is used for equality check (value only)? a. = b. == c. === d. != 13 / 30 Category: Easy Level 13. Which method adds element at the beginning of an array? a. push() b. pop() c. shift() d. unshift() 14 / 30 Category: Easy Level 14. Which method removes last array element? a. push() b. shift() c. pop() d. remove() 15 / 30 Category: Easy Level 15. Which keyword is used to declare a variable? a. var b. let c. const d. all of these 16 / 30 Category: Easy Level 16. Which keyword stops loop execution? a. exit b. break c. stop d. end 17 / 30 Category: Easy Level 17. Which function converts string to number? a. toNumber() b. parseInt() c. convert() d. stringToInt() 18 / 30 Category: Easy Level 18. Which method removes first array element? a. pop() b. shift() c. unshift() d. slice() 19 / 30 Category: Easy Level 19. Which keyword is used for conditional statement? a. if b. else c. else if d. all of these 20 / 30 Category: Easy Level 20. Which function executes when a button is clicked? a. click() b. onClick() c. onclick d. mouseclick() 21 / 30 Category: Easy Level 21. Which data type is NOT primitive in JavaScript? a. String b. Number c. Boolean d. Object 22 / 30 Category: Easy Level 22. Which loop is used to iterate arrays? a. for b. while c. forEach() d. all of these 23 / 30 Category: Easy Level 23. What does JS stand for? a. Java Source b. JavaScript c. Just Script d. Java Syntax 24 / 30 Category: Easy Level 24. Which event occurs when page loads? a. onload b. onclick c. onready d. onopen 25 / 30 Category: Easy Level 25. Which loop runs at least once? a. for b. while c. do...while d. foreach 26 / 30 Category: Easy Level 26. Which JavaScript method is used to display output? a. print() b. console.log() c. display() d. write() 27 / 30 Category: Easy Level 27. What will typeof null return? a. null b. object c. undefined d. number 28 / 30 Category: Easy Level 28. Which symbol is used for multi-line comments? a. // b. # c. /* */ d. <!-- --> 29 / 30 Category: Easy Level 29. Which object represents HTML document? a. window b. html c. document d. body 30 / 30 Category: Easy Level 30. Which keyword skips current iteration? a. pass b. skip c. continue d. next Your score is 0% Restart quiz Rate Us! Thank You for Rating Us! Send feedback Like this:Like Loading...Share post Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Prajjwal Singh Tech Blogger || Web developer || Computer Networking Enthusiast || Microsoft SQL Database Management Expert || Software Debugger || Learned DOS OS Structure Leave a ReplyCancel reply
