Answer & Solution
Answer: Option A
Solution:
The 'instanceof' keyword is used to determine if an object is an instance of a particular class or constructor.
Q
What is the purpose of the 'instanceof' keyword in JavaScript?
Related Questions on Average
What does the 'this' keyword refer to in JavaScript?
A). The object on which a method is called
B). The global object
C). The parent function
D). The current file
Which keyword is used to create a new instance of an object?
A). new
B). instanceof
C). this
D). create
What is the purpose of the 'if' keyword in JavaScript?
A). To perform conditional execution
B). To declare functions
C). To create loops
D). To skip iterations in a loop
Which keyword is used to create a loop with multiple cases in JavaScript?
A). switch
B). for
C). while
D). if
Which keyword is used to declare constants in JavaScript?
A). const
B). let
C). var
D). constant
What does the 'return' keyword do in JavaScript?
A). Exits a loop or switch statement
B). Continues to the next iteration in a loop
C). Returns a value from a function
D). Skips the current iteration in a loop
Which keyword is used to declare variables in JavaScript?
A). var
B). let
C). const
D). variable
Which keyword is used to skip the current iteration in a loop?
A). continue
B). break
C). return
D). exit
Which keyword is used to determine the type of a variable or an expression?
A). typeof
B). type
C). typeOf
D). instanceof
What does the 'break' keyword do in JavaScript?
A). Exits a loop or switch statement
B). Continues to the next iteration in a loop
C). Returns a value from a function
D). Skips the current iteration in a loop