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Welcome to the Invocation and Performance MCQs Page

Dive deep into the fascinating world of Invocation and Performance with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Invocation and Performance, a crucial aspect of JavaScript. In this section, you will encounter a diverse range of MCQs that cover various aspects of Invocation and Performance, 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.

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Check out the MCQs below to embark on an enriching journey through Invocation and Performance. 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 Invocation and Performance. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Invocation and Performance MCQs | Page 6 of 9

Explore more Topics under JavaScript

Q51.
What is the purpose of script loading?

a.

Load Scripts programmatically

b.

Load JavaScript files manually

c.

Load JavaScript files programmatically

d.

All of the mentioned

Discuss
Answer: (c).Load JavaScript files programmatically
Q52.
What will happen if the browser encounters a script tag without an src attribute?

a.

Throws an error

b.

Throws an exception

c.

Sends it to the compiler

d.

Sends it to the interpreter

Discuss
Answer: (d).Sends it to the interpreter
Q53.
What is the solution to the absence of a script tag without an src attribute?

a.

Resend the scripts

b.

Create inline JavaScript

c.

All of the mentioned

d.

None of the mentioned

Discuss
Answer: (b).Create inline JavaScript
Q54.
How to get a particular value using the tagged name?

a.

getElementbyID()

b.

getElementsbyName()

c.

getElementsbyTagName()

d.

getTagName()

Discuss
Answer: (c).getElementsbyTagName()
Q55.
What should be the type of the script_url?

a.

Object

b.

String

c.

Array

d.

Any of the mentioned

Discuss
Answer: (d).Any of the mentioned
Q56.
What is the purpose of using the async attribute in the script tag?

a.

Load the script asynchronously

b.

Load the script synchronously

c.

Load the page asynchronously

d.

Load the page synchronously

Discuss
Answer: (a).Load the script asynchronously
Q57.
Why do we need to use an onload event in the script tag after using the async attribute?

a.

Invoke code during page loading

b.

Invoke code during script loading

c.

Invoke code during downloading

d.

None of the mentioned

Discuss
Answer: (c).Invoke code during downloading
Q58.
What is the purpose of the startTimeLogging() method?

a.

Start the timer

b.

Capture time logging

c.

Capture timing data for referencing

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q59.
What is the type of datatype the async attribute optionally accepts?

a.

Integer

b.

String

c.

Boolean

d.

Decimal

Discuss
Answer: (c).Boolean
Q60.
What is the method used to create an element in the HTML DOM?

a.

createDOMelement()

b.

createElement()

c.

createDOMElement()

d.

none of the mentioned

Discuss
Answer: (b).createElement()
Page 6 of 9

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