What will be the data type of the result when dividing a number by zero in JavaScript?
A). Infinity
B). NaN
C). Undefined
D). Null
What will be the output of typeof NaN in JavaScript?
A). String
B). Number
C). NaN
D). Undefined
What will be the output of typeof undefined in JavaScript?
A). String
B). Undefined
C). Null
D). Object
Which data type is used to represent a list of elements in JavaScript?
A). List
B). Array
C). Tuple
D). Set
What data type is used to represent a collection of key-value pairs in JavaScript?
A). Object
B). Array
C). Map
D). Set
Which of the following is not a valid JavaScript variable name according to naming conventions?
A). myVariable
B). _myVariable
C). 2ndVariable
D). MyVariable
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 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 null in JavaScript?
A). Object
B). String
C). Null
D). Undefined
What is the data type of the value 'null' (as a string) in JavaScript?
A). Object
B). String
C). Null
D). Undefined