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