Vidyalelo
JavaScript · all questions

Invocation And Performance Navigation
practice.

Practice every MCQ with options. Use Show answers when you want the correct option and solution.

88

Questions

4/5

Page

Pick an option on a question to see the right answer and solution.

What is the purpose of the method createDocumentFragment()?

Select an option to see the answer and solution.

What is the default value of the asyc attribute?

Select an option to see the answer and solution.

What is the method to create a data frame ?

Select an option to see the answer and solution.

What is the purpose of creating a data frame?

Select an option to see the answer and solution.

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

Select an option to see the answer and solution.

Which best explains getSelection()?

Select an option to see the answer and solution.

Which of the following are client-side JavaScript object?

Select an option to see the answer and solution.

What is the purpose of the method localeCompare()?

Select an option to see the answer and solution.

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

Select an option to see the answer and solution.

To define each of the set classes as a property of the sets object (namespace) for the module, the statement is

Select an option to see the answer and solution.

What is the purpose of lazy loading?

Select an option to see the answer and solution.

Where is the external JavaScript placed in the case of lazy loading?

Select an option to see the answer and solution.

What are the parameters of the attachEvent function?

Select an option to see the answer and solution.

What is the result when the showPerformanceMetrics() is called before loading the remote script?

Select an option to see the answer and solution.

Which of the following is an attribute to the script object?

Select an option to see the answer and solution.

Which is the method used to add an event listener?

Select an option to see the answer and solution.

What is the purpose of the domLoading attribute?

Select an option to see the answer and solution.

How is the render time calculated?

Select an option to see the answer and solution.

The object whose properties are inherited by all instances of the class, and properties whose values are functions behaving like instance methods of the class, is

Select an option to see the answer and solution.

You can refresh the webpage in JavaScript by using

Select an option to see the answer and solution.