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 will be the output of typeof undefined in JavaScript?
A). String
B). Undefined
C). Null
D). Object
What will be the output of typeof {} in JavaScript?
A). Object
B). Null
C). Undefined
D). Boolean
Which data type is used to represent a list of elements in JavaScript?
A). List
B). Array
C). Tuple
D). Set
What is the data type of the value 'null' (as a string) in JavaScript?
A). Object
B). String
C). Null
D). Undefined
What is the data type of the value true in JavaScript?
A). Boolean
B). String
C). Number
D). Undefined
What will be the output of typeof NaN in JavaScript?
A). String
B). Number
C). NaN
D). Undefined
Which of the following data types is used to represent a function in JavaScript?
A). Func
B). Function
C). Method
D). Procedure
What data type is used to represent a collection of key-value pairs in JavaScript?
A). Object
B). Array
C). Map
D). Set