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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 7 of 9

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Q61.
What is the purpose of the method createDocumentFragment()?

a.

Creates a fragment object

b.

Creates a document fragment

c.

Creates imaginary node object

d.

None of the mentioned

Discuss
Answer: (c).Creates imaginary node object
Q62.
What is the default value of the asyc attribute?

a.

0

b.

1

c.

False

d.

True

Discuss
Answer: (d).True
Q63.
What is the method to create a data frame ?

a.

frame(data)

b.

frameData()

c.

data.frame()

d.

none of the mentioned

Discuss
Answer: (c).data.frame()
Q64.
What is the purpose of creating a data frame?

a.

Hold the page render time

b.

Hold the load time

c.

Hold the page render time & load time

d.

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?

a.

navigator.appCodeName

b.

navigator.appName

c.

navigator.appVersion

d.

none of the mentioned

Discuss
Answer: (a).navigator.appCodeName
Q66.
Which best explains getSelection()?

a.

Returns the VALUE of a selected OPTION

b.

Returns document.URL of the window in focus

c.

Returns the value of cursor-selected text

d.

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?

a.

Database

b.

Cursor

c.

Client

d.

FileUpLoad

Discuss
Answer: (d).FileUpLoad
Q68.
What is the purpose of the method localeCompare()?

a.

If the reference string comes before or after another string

b.

If the reference string is validated

c.

If the string is a reference string

d.

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?

a.

s.on("data",f);

b.

s.on("end",f);

c.

s.on("error",f);

d.

s.on("default",f);

Discuss
Answer: (b).s.on("end",f);
Q70.
What is the purpose of lazy loading?

a.

Immediate loading is necessary

b.

Loading under command

c.

Immediate loading is not necessary

d.

None of the mentioned

Discuss
Answer: (c).Immediate loading is not necessary
Page 7 of 9

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