Which keyword is used to handle asynchronous operations in JavaScript?
A). async
B). await
C). sync
D). delay
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 define a class in JavaScript?
A). class
B). defineClass
C). createClass
D). classDef
Which keyword is used to handle code execution after a specified time interval in JavaScript?
A). wait
B). delay
C). execute
D). setTimeout
Which keyword is used to handle exceptions in JavaScript?
A). try
B). handle
C). catch
D). exception
What is the keyword used to declare a constant variable in JavaScript?
A). const
B). let
C). var
D). constant
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 purpose of the instanceof keyword in JavaScript?
A). To check if a variable is defined
B). To determine the type of an object
C). To create new instances of objects
D). To compare values
What keyword is used to break out of a loop in JavaScript?
A). break
B). exit
C). stop
D). halt
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