JS Quiz (Easy Level) 0% 2 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. Oops! Times Up! JavaScript (JS) JS Quiz for beginners (Level- Easy) Click on Start Button ! Login Form. NameEmail 1 / 30 Category: Easy Level 1. Which function converts JSON to object? a. convertJSON() b. parseJSON() c. JSON.stringify() d. JSON.parse() 2 / 30 Category: Easy Level 2. Which object provides math operations? a. Math b. Number c. Arithmetic d. Calc 3 / 30 Category: Easy Level 3. Which method takes user input? a. input() b. prompt() c. alert() d. confirm() 4 / 30 Category: Easy Level 4. Which keyword exits function? a. exit b. stop c. return d. break 5 / 30 Category: Easy Level 5. Which method shows confirmation dialog? a. prompt() b. confirm() c. message() d. alert() 6 / 30 Category: Easy Level 6. JavaScript can be used to manipulate HTML elements dynamically. a. True b. False This is done using DOM manipulation. 7 / 30 Category: Easy Level 7. Which method rounds a number? a. Math.floor() b. Math.ceil() c. all of these d. Math.round() 8 / 30 Category: Easy Level 8. Which method stops setInterval? a. stopInterval() b. endInterval() c. clearInterval() d. clearTimeout() 9 / 30 Category: Easy Level 9. Which statement handles errors? a. exception b. error-handle c. try-catch d. throw-error 10 / 30 Category: Easy Level 10. The const keyword allows reassignment of values. a. True b. False const variables cannot be reassigned. 11 / 30 Category: Easy Level 11. JavaScript can run without a browser using environments like Node.js. a. True b. False 12 / 30 Category: Easy Level 12. Which symbol is used for arrow function? a. => b. -> c. <= d. == 13 / 30 Category: Easy Level 13. Which value represents no value? a. undefined b. empty c. null d. none 14 / 30 Category: Easy Level 14. Which keyword defines a function? a. fun b. method c. def d. function 15 / 30 Category: Easy Level 15. Which operator is logical OR? a. && b. | c. || d. ! 16 / 30 Category: Easy Level 16. NaN stands for “Not a Number” and its data type is number. a. True b. False Although it means “Not a Number”, typeof NaN is number. 17 / 30 Category: Easy Level 17. Which keyword checks multiple conditions? a. for b. else c. if d. switch 18 / 30 Category: Easy Level 18. let variables are function-scoped. a. True b. False let is block-scoped, not function-scoped. 19 / 30 Category: Easy Level 19. isNaN("123") returns true. a. True b. False 20 / 30 Category: Easy Level 20. Which operator is logical AND? a. || b. & c. && d. ! 21 / 30 Category: Easy Level 21. Which keyword throws error manually? a. catch b. error c. throw d. stop 22 / 30 Category: Easy Level 22. Which JavaScript runs on browser? a. Server-side JS b. Client-side JS c. Backend JS d. Database JS 23 / 30 Category: Easy Level 23. Arrow functions have their own 'this' keyword. a. True b. False Arrow functions inherit this from the surrounding scope. 24 / 30 Category: Easy Level 24. Which function converts object to JSON? a. JSON.stringify() b. toJSON() c. JSON.parse() d. objectToJSON() 25 / 30 Category: Easy Level 25. JavaScript is a case-sensitive language. a. False b. True myVar and myvar are treated as different identifiers. 26 / 30 Category: Easy Level 26. JavaScript supports asynchronous programming. a. False b. True Using callbacks, promises, and async/await. 27 / 30 Category: Easy Level 27. undefined means a variable has been declared but not assigned a value. a. True b. False 28 / 30 Category: Easy Level 28. Which operator negates condition? a. != b. ! c. ~ d. not 29 / 30 Category: Easy Level 29. Which method selects elements using CSS selector? a. querySelector() b. cssSelect() c. getSelector() d. selectElement() 30 / 30 Category: Easy Level 30. Which method sets a timer? a. timer() b. setInterval() c. setTimeout() d. both a & b Your score is 0% Restart quiz Rate Us ! Thank You for Your Love ! 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 Read more articles Previous Post30 JavaScript Questions Quiz Prajjwal Singh Tech Blogger || Web developer || Computer Networking Enthusiast || Microsoft SQL Database Management Expert || Software Debugger || Learned DOS OS Structure You Might Also Like 30 JavaScript Questions Quiz December 29, 2025 Leave a ReplyCancel reply
