Answer & Solution
Answer: Option B
Solution:
The Undefined data type in JavaScript is used to represent the absence of a value, typically when a variable has been declared but not yet assigned a value.
Q
Which data type is used to represent the absence of a value in JavaScript?
Related Questions on Average
Which of the following is not a valid JavaScript data type?
A). Integer
B). Object
C). Symbol
D). NaN
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A). Object
B). Null
C). Undefined
D). Boolean
Which of the following is not a valid JavaScript variable name according to naming conventions?
A). myVariable
B). _myVariable
C). 2ndVariable
D). MyVariable
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A). Func
B). Function
C). Method
D). Procedure
Which of the following is a valid JavaScript data type for representing text?
A). Text
B). Character
C). String
D). Sentence
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A). Null
B). String
C). Number
D). Boolean
What is the data type of the value 'null' (as a string) in JavaScript?
A). Object
B). String
C). Null
D). Undefined
Which symbol is used to denote a comment in JavaScript?
A). //
B). --
C). #
D). /* ... */
What data type is used to represent a collection of key-value pairs in JavaScript?
A). Object
B). Array
C). Map
D). Set
What is the data type of the value Infinity in JavaScript?
A). Number
B). String
C). Boolean
D). Null