What is the purpose of the 'instanceof' keyword in JavaScript?
A). To determine if an object is an instance of a particular class or constructor
B). To check if an object is empty
C). To check if a variable is undefined
D). To compare two objects
Which keyword is used to declare variables in JavaScript?
A). var
B). let
C). const
D). variable
Which keyword is used to remove a property from an object?
A). delete
B). remove
C). erase
D). discard
Which keyword is used to create a loop with multiple cases in JavaScript?
A). switch
B). for
C). while
D). if
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
What is the purpose of the 'let' keyword in JavaScript?
A). To declare constants
B). To declare block-scoped variables
C). To declare functions
D). To perform logical operations
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
What does the 'typeof' keyword return for a number?
A). number
B). string
C). object
D). undefined
Which keyword is used to create a new instance of an object?
A). new
B). instanceof
C). this
D). create
Which keyword is used to determine the type of a variable or an expression?
A). typeof
B). type
C). typeOf
D). instanceof