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.

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 7 of 9

Explore more Topics under JavaScript

01

Basics of JavaScript

02

Arrays and Functions

03

Classes and Modules

04

Server Side and Client Side Scripting

05

Document Object Model and Event Handling

06

Graphics and Rendering

07

Performance Measures in JavaScript

08

Socket Programming with JavaScript

09

Parsing, Benchmarking and Logging

10

Caching and Debugging

11

JavaScript Animation

Q61.

What is the purpose of the method createDocumentFragment()?

Creates a fragment object

Creates a document fragment

Creates imaginary node object

None of the mentioned

Discuss

Answer: (c).Creates imaginary node object

Q62.

What is the default value of the asyc attribute?

False

True

Discuss

Answer: (d).True

Q63.

What is the method to create a data frame ?

frame(data)

frameData()

data.frame()

none of the mentioned

Discuss

Answer: (c).data.frame()

Q64.

What is the purpose of creating a data frame?

Hold the page render time

Hold the load time

Hold the page render time & load time

None of the mentioned

Discuss

Answer: (c).Hold the page render time & load time

Q65.

Which of the following navigator object properties is the same in both Netscape and IE?

navigator.appCodeName

navigator.appName

navigator.appVersion

none of the mentioned

Discuss

Answer: (a).navigator.appCodeName

Q66.

Which best explains getSelection()?

Returns the VALUE of a selected OPTION

Returns document.URL of the window in focus

Returns the value of cursor-selected text

Returns the VALUE of a checked radio input

Discuss

Answer: (c).Returns the value of cursor-selected text

Q67.

Which of the following are client-side JavaScript object?

Database

Cursor

Client

FileUpLoad

Discuss

Answer: (d).FileUpLoad

Q68.

What is the purpose of the method localeCompare()?

If the reference string comes before or after another string

If the reference string is validated

If the string is a reference string

None of the mentioned

Discuss

Answer: (a).If the reference string comes before or after another string

Q69.

When the 'end' event fires on EOF when no more data will arrive, which function is called?

s.on("data",f);

s.on("end",f);

s.on("error",f);

s.on("default",f);

Discuss

Answer: (b).s.on("end",f);

Q70.

What is the purpose of lazy loading?

Immediate loading is necessary

Loading under command

Immediate loading is not necessary

None of the mentioned

Discuss

Answer: (c).Immediate loading is not necessary

Page 7 of 9

Welcome to the Invocation and Performance MCQs Page

Invocation and Performance MCQs | Page 7 of 9

Explore more Topics under JavaScript

Basics of JavaScript

Arrays and Functions

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

Caching and Debugging

JavaScript Animation

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