JavaScript MCQ Questions with answers and solutions Page 34

Q. JavaScript was invented at _______ Lab.

(A) AT&T Bell LAb
(B) Google Lab
(C) Sun Microsystem
(D) Netscape

💬 Discuss

✅ Correct Answer: (D) Netscape

Published by Akash Lawaniya ⭐ 9.58K Points at 30-Jun-2022 07:13 pm in JavaScript

Q. Variable can hold ________ value at a time.

(A) Multiple
(B) Single
(C) Double
(D) None of these

💬 Discuss

✅ Correct Answer: (B) Single

Published by Akash Lawaniya ⭐ 9.58K Points at 30-Jun-2022 07:13 pm in JavaScript

Q. The object has three object attributes namely

(A) Class, parameters, object’s extensible flag
(B) Prototype, class, objects’ parameters
(C) Prototype, class, object’s extensible flag
(D) Native object, Classes and Interfacces and Object’s extensible flag

💬 Discuss

✅ Correct Answer: (C) Prototype, class, object’s extensible flag

Published by Akash Lawaniya ⭐ 9.58K Points at 30-Jun-2022 07:14 pm in JavaScript

Q. A linkage of series of prototype objects is called as

(A) prototype stack
(B) prototype chain
(C) prototype class
(D) prototypes

💬 Discuss

✅ Correct Answer: (B) prototype chain

Published by Akash Lawaniya ⭐ 9.58K Points at 30-Jun-2022 07:14 pm in JavaScript

Q. To determine whether one object is the prototype of (or is part of the prototype chain of) another object, one should use the

(A) isPrototypeOf() method
(B) equals() method
(C) === operator
(D) none of the mentioned

💬 Discuss

✅ Correct Answer: (A) isPrototypeOf() method

Published by Akash Lawaniya ⭐ 9.58K Points at 30-Jun-2022 07:15 pm in JavaScript

Q. The purpose of extensible attribute is to

(A) make all of the own properties of that object nonconfigurable
(B) to configure and bring a writable property
(C) “lock down” objects into a known state and prevent outside tampering
(D) all of the mentioned

💬 Discuss

✅ Correct Answer: (C) “lock down” objects into a known state and prevent outside tampering

Published by Akash Lawaniya ⭐ 9.58K Points at 30-Jun-2022 07:15 pm in JavaScript

Q. The basic purpose of the toLocaleString() is to

(A) return a localised object representation
(B) return a parsed string
(C) return a local time in the string format
(D) return a localized string representation of the object

💬 Discuss

✅ Correct Answer: (D) return a localized string representation of the object

Published by Akash Lawaniya ⭐ 9.58K Points at 30-Jun-2022 07:16 pm in JavaScript

Q. JavaScript is designed for following purpose

(A) To Style HTML Pages
(B) To Execute Query Related to DB on Server
(C) To add interactivity to HTML Pages.
(D) To Perform Server Side Scripting Opertion

💬 Discuss

✅ Correct Answer: (C) To add interactivity to HTML Pages.

Published by Akash Lawaniya ⭐ 9.58K Points at 30-Jun-2022 07:16 pm in JavaScript

Q. JavaScript Code can be called by using _________.

(A) RMI
(B) Triggering Event
(C) Preprocessor
(D) Function / Method

💬 Discuss

✅ Correct Answer: (D) Function / Method

Published by Akash Lawaniya ⭐ 9.58K Points at 30-Jun-2022 07:16 pm in JavaScript

Q. Which attribute is used to specifies that the script is executed when the page has finished parsing (only for external scripts)

(A) parse
(B) async
(C) defer
(D) type

💬 Discuss

✅ Correct Answer: (C) defer

Published by Akash Lawaniya ⭐ 9.58K Points at 30-Jun-2022 07:17 pm in JavaScript

JavaScript MCQs with answers Page - 34

Q. JavaScript was invented at _______ Lab.

Q. Variable can hold ________ value at a time.

Q. The object has three object attributes namely

Q. A linkage of series of prototype objects is called as

Q. To determine whether one object is the prototype of (or is part of the prototype chain of) another object, one should use the

Q. The purpose of extensible attribute is to

Q. The basic purpose of the toLocaleString() is to

Q. JavaScript is designed for following purpose

Q. JavaScript Code can be called by using _________.

Q. Which attribute is used to specifies that the script is executed when the page has finished parsing (only for external scripts)

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