52 JavaScript MCQ Questions in english

Home
Subjects
JavaScript

Subjectwise MCQ

English Hindi General Knowledge Mathematics History Geography Science Reasoning Economics Accounts Business Computer Government Scheme Statewise first CM List Biology Invention Environment Science Polity Sports GK JavaScript C And C++HTML and CSS MS Word MS Excel MS PowerPoint Bootstrap Python PHP MySQL Uttarakhand Fair

Select Subject

Statewise Prepration

Andaman Nicobar Andhra Pradesh Arunchal Pradesh Assam Bihar Chandigarh Chhatisgarh Dadra & Nagar Haveli and Daman & Diu Delhi Goa Gujarat Haryana Himachal Pradesh Jammu & Kashmir Jharkhand Karnatka Kerala Laddakh Lakshadweep Madhya Pradesh Maharashtra Manipur Meghalaya Mizoram Nagaland Odisha Pondicherry Punjab Rajasthan Sikkim Tamil Nadu Telangana Tripura Uttar Pradesh Uttarakhand West Bengal

Select State

Govt. Examwise MCQ

Group C IAS PCS Lower PCS Railway SSC Bank UKPSC Police Group D FCI LIC CAT MAT GMAT TET CTET CUET B. Ed Bank PO Bank Special Officer CTET UTET

Select Examination

Group C IAS PCS Lower PCS Railway SSC Bank UKPSC Police Group D FCI LIC CAT MAT GMAT TET CTET CUET B. Ed Bank PO Bank Special Officer CTET UTET

52 JavaScript MCQ Questions in english हिन्दी

52. Which Indian Weightlifter grabbed the gold in women's 59 kg events at the World Weightlifting Championships-2024?

A. Mirabai Chanu

B. Sanjita Khumukcham

C. P. Gururaja

D. Rakhi Halder

51. Which of the following operators is used to determine whether or not a particular property exists?

A. Exists

B. exist

C. in

D. within

50. 25. Which of these keywords is used to check for exceptions in the block?

A. check

B. throw

C. catch

D. try

49. 24. Which of the following statements about Thread is untrue?

A. start() method is used to begin execution of the thread

B. run() method is used to begin execution of a thread before start() method in special cases

C. A thread can be formed by implementing Runnable interface only

D. A thread can be formed by a class that extends Thread class

48. Which of the following selections serves as the literal hexadecimal start?

A. 00

B. 0x

C. Both 0x and 0X

D. 0X

47. 23.Which of these packages includes the Java Stack Overflow exception?

A. java.io

B. java.system

C. java.lang

D. java.util

46. Which type of variable among the following is volatile?

A. Immutable variable

B. Dynamic variable

C. Volatile variable

D. Mutable variable

45. If the names of two variables are the same, which one is the dominant one?

A. Global variable

B. The two of the above

C. The local element

D. None of the above

44. The names of the "function" and "var" are:

A. Keywords

B. Data types

C. Declaration statements

D. Prototypes

43. What happens if an interpreter runs into an empty statement:

A. Shows a warning

B. Prompts to complete the statement

C. Throws an error

D. Ignores the statements

42. What does a block of statements mean in JavaScript?

A. Conditional block

B. block that combines a number of statements into a single compound statement

C. both conditional block and a single statement

D. block that contains a single statement

41. Which of the following doesn't constitute a JavaScript error?

A. Missing of Bracket

B. Division by zero

C. Syntax error

D. Missing of semicolons

40. Which of the following properties is the one that JS faults cause to be triggered?

A. onclick

B. onerror

C. onmessage

D. onexception

39. 22. What will the following Java programme produce?

A. www.sanfoundry.com

B. https://www.sanfoundry.com/javamcq

C. sanfoundry

D. sanfoundry.com

38. which is not a framework?

A. JavaScript .NET

B. JavaScript

C. Cocoa JS

D. jQuery

37. Why are JS event handlers necessary?

A. Allows JavaScript code to alter the behaviour of windows

B. Adds innerHTML page to the code

C. Change the server location

D. Performs handling of exceptions and occurrences

36. Which of the subsequent operations and/or procedures does JavaScript utilise in place of == and!=?

A. JavaScript uses equalto()

B. JavaScript uses equals() and notequals() instead

C. JavaScript uses bitwise checking

D. JavaScript uses === and !== instead

35. 21. Of the following, which is not a Java Profiler?

A. JProfiler

B. Eclipse Profiler

C. JVM

D. JConsole

34. Why is a JavaScript Engine necessary?

A. Both Compiling & Interpreting the JavaScript

B. Parsing the javascript

C. Interpreting the JavaScript

D. Compiling the JavaScript

33. 20. Which of the following describes the superclass of each Java class?

A. ArrayList

B. Abstract class

C. Object class

D. String

32. What fundamental differences exist between Java and JavaScript?

A. Functions are considered as fields

B. Functions are values, and there is no hard distinction between methods and fields

C. Variables are specific

D. There is no difference

31. 19. Which of the following keywords is used in Java to define interfaces?

A. intf

B. Intf

C. interface

D. Interface

30. What kind of scoping method does JavaScript employ?

A. Sequential

B. Segmental

C. Lexical

D. Literal

29. 18. Which of these is a Java selection statement?

A. break

B. break

C. for()

D. if()

28. Which of the following best describes what takes place when JavaScript software is created on a Unix machine?

A. will work perfectly well on a Windows Machine

B. will be displayed as JavaScript text on the browser

C. will throw errors and exceptions

D. must be restricted to a Unix Machine only

27. 17. In Java, what exception is raised when memory is exhausted?

A. MemoryError

B. OutOfMemoryError

C. MemoryOutOfBoundsException

D. MemoryFullException

26. 16. What does the term "compiled Java classes" mean?

A. .txt

B. .js

C. .class

D. .java

25. A JavaScript Code Snippet can be called using which of the following?

A. Function/Method

B. Preprocessor

C. Triggering Event

D. RMI

« Previous
Next »

Showing 1 to 28 of 52 results

Latest Jobs

UPSC Recruitment 2025

Last Date: Jul 17

UPSC

MPSFRI Recruitment 2025

Last Date: Jul 04

Career

IIITDM Jabalpur Recruitment 2025

Last Date: Jul 14

Education

IISER Bhopal Recruitment 2025

Last Date: Jul 10