What is the data type of the value NaN in JavaScript?
A). Null
B). String
C). Number
D). Boolean
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 the absence of a value in JavaScript?
A). Null
B). Undefined
C). NaN
D). Boolean
What is the data type of the value true in JavaScript?
A). Boolean
B). String
C). Number
D). Undefined
What will the data type of the variable name be if it is assigned the value 'John Doe'?
A). Number
B). String
C). Boolean
D). Undefined
Which symbol is used to denote a comment in JavaScript?
A). //
B). --
C). #
D). /* ... */
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
Which of the following is not a valid JavaScript variable name according to naming conventions?
A). myVariable
B). _myVariable
C). 2ndVariable
D). MyVariable
Which of the following is not a valid JavaScript data type?
A). Integer
B). Object
C). Symbol
D). NaN