JavaScript MCQ Questions with answers and solutions Page 6

Q. Which is an equivalent code to invoke a function fun of class opt that expects two arguments p and q?

(A) opt.fun(p,q);
(B) fun(p,q);
(C) opt.fun(p) && opt.fun(q);
(D) opt(p,q);

💬 Discuss

✅ Correct Answer: (A) opt.fun(p,q);

Published by Vishal Gupta ⭐ 7.73K Points at 07-Jun-2022 07:30 am in JavaScript

Q. Which of the following is the correct code for invoking a function without this keyword at all, and also too determine whether the strict mode is in effect?

(A) mode strict = (function { });
(B) var strict = (function { return this; });
(C) mode strict = (function() { return !this; }());
(D) var strict = (function() { return !this; }());

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✅ Correct Answer: (D) var strict = (function() { return !this; }());

Published by Vishal Gupta ⭐ 7.73K Points at 07-Jun-2022 07:31 am in JavaScript

Q. Consider the following code snippet.
What will be the result of this code?

Code:

function hypotenuse(p, q) 
{
       function square(n) 
       { 
            return n*n; 
       }
       return Math.sqrt(square(p) + square(q));
}

(A) Square of sum of p and q
(B) Sum of p and q square
(C) Sum of square of p and q
(D) All of above

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✅ Correct Answer: (C) Sum of square of p and q

Published by Vishal Gupta ⭐ 7.73K Points at 07-Jun-2022 07:32 am in JavaScript

Q. A function with no return value is called

(A) Dynamic function
(B) Static function
(C) Method
(D) Procedures

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✅ Correct Answer: (A) Dynamic function

Published by Vishal Gupta ⭐ 7.73K Points at 07-Jun-2022 07:32 am in JavaScript

Q. What will happen if a return statement does not have an associated expression?

(A) It will throw an exception
(B) It will throw an error
(C) It returns the value 0
(D) It returns the undefined value

💬 Discuss

✅ Correct Answer: (D) It returns the undefined value

Published by Vishal Gupta ⭐ 7.73K Points at 07-Jun-2022 07:33 am in JavaScript

Q. What is the purpose of a return statement in a function?

(A) Stops executing the function and returns the value
(B) Returns the value and stops executing the function
(C) Returns the value and stops the program
(D) Returns the value and continues executing rest of the statements, if any

💬 Discuss

✅ Correct Answer: (A) Stops executing the function and returns the value

Published by Vishal Gupta ⭐ 7.73K Points at 07-Jun-2022 07:33 am in JavaScript

Q. When does the function name become optional in JavaScript?

(A) When the function is predefined
(B) when the function is called
(C) When the function is defined as expressions
(D) When the function is defined as a looping statement

💬 Discuss

✅ Correct Answer: (C) When the function is defined as expressions

Published by Vishal Gupta ⭐ 7.73K Points at 07-Jun-2022 07:34 am in JavaScript

Q. Consider the following code snippet.
What will the above code snippet result ?

Code:

function output(n) 
{
    for(var v in n)
      console.log(v + ": " + n[v] + "\n");
}

(A) prints only one property
(B) Prints the contents of each property of n
(C) prints the address of elements
(D) Returns undefined

💬 Discuss

✅ Correct Answer: (D) Returns undefined

Published by Vishal Gupta ⭐ 7.73K Points at 07-Jun-2022 07:34 am in JavaScript

Q. The function definitions in JavaScript begins with

(A) Return type and Identifier
(B) Return type, Function keyword, Identifier and Parentheses
(C) Identifier and Return type
(D) Identifier and Parentheses

💬 Discuss

✅ Correct Answer: (B) Return type, Function keyword, Identifier and Parentheses

Published by Vishal Gupta ⭐ 7.73K Points at 07-Jun-2022 07:35 am in JavaScript

Q. Among the keywords below, which one is not a statement?

(A) use strict
(B) if
(C) with
(D) debugger

💬 Discuss

✅ Correct Answer: (A) use strict

Published by Manisha Agrawal ⭐ 9.34K Points at 08-Jun-2022 11:38 am in JavaScript

JavaScript MCQs with answers Page - 6

Q. Which is an equivalent code to invoke a function fun of class opt that expects two arguments p and q?

Q. Which of the following is the correct code for invoking a function without this keyword at all, and also too determine whether the strict mode is in effect?

Q. Consider the following code snippet.
What will be the result of this code?

Q. A function with no return value is called

Q. What will happen if a return statement does not have an associated expression?

Q. What is the purpose of a return statement in a function?

Q. When does the function name become optional in JavaScript?

Q. Consider the following code snippet.
What will the above code snippet result ?

Q. The function definitions in JavaScript begins with

Q. Among the keywords below, which one is not a statement?

Programming Categories

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JavaScript MCQs with answers Page - 6

Q. Which is an equivalent code to invoke a function fun of class opt that expects two arguments p and q?

Q. Which of the following is the correct code for invoking a function without this keyword at all, and also too determine whether the strict mode is in effect?

Q. Consider the following code snippet. What will be the result of this code?

Q. A function with no return value is called

Q. What will happen if a return statement does not have an associated expression?

Q. What is the purpose of a return statement in a function?

Q. When does the function name become optional in JavaScript?

Q. Consider the following code snippet. What will the above code snippet result ?

Q. The function definitions in JavaScript begins with

Q. Among the keywords below, which one is not a statement?

Programming Categories

📱 Download Our App

Q. Consider the following code snippet.
What will be the result of this code?

Q. Consider the following code snippet.
What will the above code snippet result ?