JS Quiz (Easy Level) 0% 2 Report a question Table of Contents ToggleReport a questionShare this:Like this:Related 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 isNaN("123") returns true. a. False b. True 2 / 30 Category: Easy Level Which operator is logical OR? a. || b. && c. | d. ! 3 / 30 Category: Easy Level Which keyword exits function? a. return b. exit c. break d. stop 4 / 30 Category: Easy Level Arrow functions have their own 'this' keyword. a. False b. True Arrow functions inherit this from the surrounding scope. 5 / 30 Category: Easy Level JavaScript can be used to manipulate HTML elements dynamically. a. False b. True This is done using DOM manipulation. 6 / 30 Category: Easy Level The const keyword allows reassignment of values. a. False b. True const variables cannot be reassigned. 7 / 30 Category: Easy Level Which statement handles errors? a. try-catch b. exception c. error-handle d. throw-error 8 / 30 Category: Easy Level Which method takes user input? a. alert() b. confirm() c. prompt() d. input() 9 / 30 Category: Easy Level Which operator is logical AND? a. & b. ! c. && d. || 10 / 30 Category: Easy Level Which JavaScript runs on browser? a. Server-side JS b. Database JS c. Backend JS d. Client-side JS 11 / 30 Category: Easy Level Which method stops setInterval? a. stopInterval() b. clearTimeout() c. endInterval() d. clearInterval() 12 / 30 Category: Easy Level Which method sets a timer? a. setTimeout() b. both a & b c. timer() d. setInterval() 13 / 30 Category: Easy Level Which function converts JSON to object? a. JSON.stringify() b. parseJSON() c. JSON.parse() d. convertJSON() 14 / 30 Category: Easy Level Which method rounds a number? a. Math.round() b. all of these c. Math.floor() d. Math.ceil() 15 / 30 Category: Easy Level Which method shows confirmation dialog? a. message() b. confirm() c. prompt() d. alert() 16 / 30 Category: Easy Level undefined means a variable has been declared but not assigned a value. a. False b. True 17 / 30 Category: Easy Level Which keyword checks multiple conditions? a. switch b. else c. for d. if 18 / 30 Category: Easy Level Which method selects elements using CSS selector? a. querySelector() b. selectElement() c. cssSelect() d. getSelector() 19 / 30 Category: Easy Level Which function converts object to JSON? a. JSON.parse() b. JSON.stringify() c. toJSON() d. objectToJSON() 20 / 30 Category: Easy Level Which operator negates condition? a. ~ b. != c. ! d. not 21 / 30 Category: Easy Level JavaScript can run without a browser using environments like Node.js. a. False b. True 22 / 30 Category: Easy Level JavaScript is a case-sensitive language. a. True b. False myVar and myvar are treated as different identifiers. 23 / 30 Category: Easy Level let variables are function-scoped. a. False b. True let is block-scoped, not function-scoped. 24 / 30 Category: Easy Level Which object provides math operations? a. Arithmetic b. Calc c. Number d. Math 25 / 30 Category: Easy Level 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. 26 / 30 Category: Easy Level Which keyword defines a function? a. def b. function c. fun d. method 27 / 30 Category: Easy Level Which value represents no value? a. none b. empty c. undefined d. null 28 / 30 Category: Easy Level Which keyword throws error manually? a. error b. throw c. catch d. stop 29 / 30 Category: Easy Level JavaScript supports asynchronous programming. a. True b. False Using callbacks, promises, and async/await. 30 / 30 Category: Easy Level Which symbol is used for arrow function? a. -> b. <= c. => d. == Your score is 0% Restart quiz Rate Us ! Thank You for Your Love ! Send feedback Share this: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Like this:Like Loading… Related 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 Next Post30 Days JavaScript Assignments for Beginners: Easy to Hard Practice Series | BittuTech Prajjwal Singh Tech Blogger || Web developer || Computer Networking Enthusiast || Microsoft SQL Database Management Expert || Software Debugger || Learned DOS OS Structure You Might Also Like O Level M2-R5 Web Designing & Publishing Notes PDF – Free Download August 13, 2026 30 Days JavaScript Assignments for Beginners: Easy to Hard Practice Series | BittuTech May 17, 2026 30 JavaScript Questions Quiz December 29, 2025 Leave a ReplyCancel reply
