Welcome to the Arrays and Functions MCQs Page

Dive deep into the fascinating world of Arrays and Functions with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Arrays and Functions, a crucial aspect of JavaScript. In this section, you will encounter a diverse range of MCQs that cover various aspects of Arrays and Functions, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within JavaScript.

Check out the MCQs below to embark on an enriching journey through Arrays and Functions. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of JavaScript.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Arrays and Functions. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Arrays and Functions MCQs | Page 2 of 4

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Q11.

The function definitions in JavaScript begins with

Identifier and Parantheses

Return type and Identifier

Return type, Function keyword, Identifier and Parantheses

Identifier and Return type

Discuss

Answer: (a).Identifier and Parantheses

Q12.

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

function printprops(o) 
{
  for(var p in o)
  console.log(p + ": " + o[p] + "n");
}

Prints the contents of each property of o

Returns undefined

All of the mentioned

None of the mentioned

Discuss

Answer: (b).Returns undefined

Q13.

When does the function name become optional in JavaScript?

When the function is defined as a looping statement

When the function is defined as expressions

When the function is predefined

All of the mentioned

Discuss

Answer: (b).When the function is defined as expressions

Q14.

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

Returns the value and continues executing rest of the statements, if any

Returns the value and stops the program

Returns the value and stops executing the function

Stops executing the function and returns the value

Discuss

Answer: (d).Stops executing the function and returns the value

Q15.

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

It returns the value 0

It will throw an exception

It returns the undefined value

None of the mentioned

Discuss

Answer: (c).It returns the undefined value

Q16.

A function with no return value is called

Procedures

Method

Static function

Dynamic function

Discuss

Answer: (a).Procedures

Q17.

Consider the following code snippet. What does the below code result?

function hypotenuse(a, b) 
{
  function square(x) 
  { 
    return x*x; 
  }
  return Math.sqrt(square(a) + square(b));
}

Sum of square of a and b

Square of sum of a and b

Sum of a and b square

None of the mentioned

Discuss

Answer: (a).Sum of square of a and b

Q18.

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?

var strict = (function { return this; });

mode strict = (function() { return !this; }());

var strict = (function() { return !this; }());

mode strict = (function { });

Discuss

Answer: (c).var strict = (function() { return !this; }());

Q19.

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

o(x,y);

o.m(x) && o.m(y);

m(x,y);

o.m(x,y);

Discuss

Answer: (d).o.m(x,y);

Q20.

Consider the following code snippet :

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

The output for the above statement would be :

10*10+5

105 as a string

105 as an integer value

Exception is thrown

Discuss

Answer: (c).105 as an integer value

Page 2 of 4

Welcome to the Arrays and Functions MCQs Page

Arrays and Functions MCQs | Page 2 of 4

Explore more Topics under JavaScript

Basics of JavaScript

Classes and Modules

Server Side and Client Side Scripting

Document Object Model and Event Handling

Graphics and Rendering

Performance Measures in JavaScript

Socket Programming with JavaScript

Parsing, Benchmarking and Logging

Invocation and Performance

Caching and Debugging

JavaScript Animation

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