Q
What is the purpose of the instanceof keyword in JavaScript?

Answer & Solution

Answer: Option B
Solution:
The instanceof keyword is used to determine if an object is an instance of a specific class.
Related Questions on Average

What is the purpose of the yield keyword in JavaScript?

A). To pause and resume a generator function

B). To stop the execution of a function

C). To yield control to another function

D). To return a value from a function

Which keyword is used to define a class in JavaScript?

A). class

B). defineClass

C). createClass

D). classDef

What is the purpose of the typeof keyword in JavaScript?

A). To check if a variable is defined

B). To determine the data type of a variable

C). To create new variables

D). To delete variables

Which keyword is used to handle code execution after a specified time interval in JavaScript?

A). wait

B). delay

C). execute

D). setTimeout

What is the purpose of the break keyword in JavaScript?

A). To terminate a loop

B). To skip a loop iteration

C). To handle exceptions

D). To define a new function

What is the purpose of the arguments keyword in JavaScript?

A). To define function arguments

B). To pass arguments to a function

C). To access function arguments

D). To check if a variable is defined

What is the keyword used to declare a constant variable in JavaScript?

A). const

B). let

C). var

D). constant

Which keyword is used to define a block of code with specific permissions in JavaScript?

A). permit

B). restrict

C). block

D). secure

What is the purpose of the delete keyword in JavaScript?

A). To delete all variables

B). To remove an element from an array

C). To delete properties from an object

D). To delete functions

Which keyword is used to create a label in JavaScript?

A). mark

B). label

C). name

D). identifier