What data type is used to represent a collection of key-value pairs in JavaScript?
A). Object
B). Array
C). Map
D). Set
Which data type is used to represent a list of elements in JavaScript?
A). List
B). Array
C). Tuple
D). Set
What will be the output of typeof NaN in JavaScript?
A). String
B). Number
C). NaN
D). Undefined
What is the data type of the value null in JavaScript?
A). Object
B). String
C). Null
D). Undefined
Which symbol is used to denote a comment in JavaScript?
A). //
B). --
C). #
D). /* ... */
Which of the following is not a valid JavaScript variable name according to naming conventions?
A). myVariable
B). _myVariable
C). 2ndVariable
D). MyVariable
Which data type is used to represent the absence of a value in JavaScript?
A). Null
B). Undefined
C). NaN
D). Boolean
What is the data type of the value Infinity in JavaScript?
A). Number
B). String
C). Boolean
D). Null
Which of the following data types is used to represent a function in JavaScript?
A). Func
B). Function
C). Method
D). Procedure
What is the data type of the value true in JavaScript?
A). Boolean
B). String
C). Number
D). Undefined