JavaScript MCQ Questions with answers and solutions Page 30

Q. Which of the following attributes are common to both audio and video?

(A) controls
(B) enter
(C) control
(D) All of the above

✅ Correct Answer: (A) controls

Published by Pradeep Sikarwar ⭐ 9.01K Points at 20-Jun-2022 08:44 pm in JavaScript

Q. The primary purpose of the array map() function is that it

(A) passes each element of the array and returns the necessary mapped elements
(B) maps the elements of another array into itself
(C) passes each element of the array on which it is invoked to the function you specify, and returns an array containing the values returned by that function
(D) None of these

✅ Correct Answer: (C) passes each element of the array on which it is invoked to the function you specify, and returns an array containing the values returned by that function

Published by Pradeep Sikarwar ⭐ 9.01K Points at 20-Jun-2022 08:45 pm in JavaScript

Q. Which of the following is not the property of the video tag?

(A) width
(B) breadth
(C) height
(D) None of these

💬 Discuss

✅ Correct Answer: (B) breadth

Published by Pradeep Sikarwar ⭐ 9.01K Points at 20-Jun-2022 08:45 pm in JavaScript

Q. Which of the following is the parameter used to invoke the Audio() constructor?

(A) File type
(B) Music type
(C) Both File and Music
(D) None of these

💬 Discuss

✅ Correct Answer: (C) Both File and Music

Published by Pradeep Sikarwar ⭐ 9.01K Points at 20-Jun-2022 08:46 pm in JavaScript

Q. Consider the following code snippet

(A) Prints the contents of each property of o
(B) Returns undefined
(C) All of the mentioned
(D) None of the mentioned

💬 Discuss

✅ Correct Answer: (B) Returns undefined

Published by Indresh Gehalot ⭐ 10.11K Points at 29-Jun-2022 05:36 pm in JavaScript

Q. Which is an equivalent code to invoke a function m of class o that expects two arguments x and y?

(A) o(x,y);
(B) o.m(x) && o.m(y);
(C) m(x,y);
(D) o.m(x,y);

💬 Discuss

✅ Correct Answer: (D) o.m(x,y);

Published by Indresh Gehalot ⭐ 10.11K Points at 29-Jun-2022 05:37 pm in JavaScript

Q. Consider the following code snippet :

Code:

var grand_Total=eval("10*10+5");

(A) 10*10+5
(B) 105 as a string
(C) 105 as an integer value
(D) Exception is thrown

💬 Discuss

✅ Correct Answer: (C) 105 as an integer value

Published by Indresh Gehalot ⭐ 10.11K Points at 29-Jun-2022 05:38 pm in JavaScript

Q. Do functions in JavaScript necessarily return a value ?

(A) It is mandatory
(B) Not necessary
(C) Few functions return values by default
(D) All of the mentioned

💬 Discuss

✅ Correct Answer: (C) Few functions return values by default

Published by Indresh Gehalot ⭐ 10.11K Points at 29-Jun-2022 05:38 pm in JavaScript

Q. Consider the following code snippet :

Code:

var tensquared = (function(x) {return x*x;}(10));

(A) Yes, perfectly
(B) Error
(C) Exception will be thrown
(D) Memory leak

💬 Discuss

✅ Correct Answer: (A) Yes, perfectly

Published by Indresh Gehalot ⭐ 10.11K Points at 29-Jun-2022 05:39 pm in JavaScript

Q. Consider the following code snippet :

(A) 123
(B) 123xyz
(C) Exception
(D) NaN

💬 Discuss

✅ Correct Answer: (B) 123xyz

Published by Indresh Gehalot ⭐ 10.11K Points at 29-Jun-2022 05:39 pm in JavaScript

JavaScript MCQs with answers Page - 30

Q. Which of the following attributes are common to both audio and video?

Q. The primary purpose of the array map() function is that it

Q. Which of the following is not the property of the video tag?

Q. Which of the following is the parameter used to invoke the Audio() constructor?

Q. Consider the following code snippet

Q. Which is an equivalent code to invoke a function m of class o that expects two arguments x and y?

Q. Consider the following code snippet :

Q. Do functions in JavaScript necessarily return a value ?

Q. Consider the following code snippet :

Q. Consider the following code snippet :

Programming Categories

📱 Download Our App