Answer & Solution
Answer: Option A
Solution:
The undefined value in JavaScript represents the absence of a value or a variable that has not been initialize
Q
Which primitive value represents absence of value or no value assigned?
Related Questions on Average
What is the result of the expression true + false in JavaScript?
A). true
B). false
C). 1
D). 0
Which symbol is used to represent a boolean value in JavaScript?
A). #
B). $
C). !
D). true/false
What is the data type of the value NaN in JavaScript?
A). Number
B). String
C). Object
D). Undefined
What is the data type of the value undefined in JavaScript?
A). String
B). Object
C). Undefined
D). Number
What is the result of the expression undefined + null in JavaScript?
A). undefined
B). null
C). 0
D). Error
Which of the following is a primitive data type in JavaScript?
A). Array
B). Object
C). Function
D). String
What is the result of the expression true == 1 in JavaScript?
A). true
B). false
C). Error
D). 1
What happens when you try to access a variable that has not been declared in JavaScript?
A). SyntaxError is thrown
B). ReferenceError is thrown
C). TypeError is thrown
D). Undefined
Which of the following is a valid way to represent the value null in JavaScript?
A). undefined
B). NULL
C). null
D). None of the above
What does the Symbol data type represent in JavaScript?
A). A unique identifier
B). A number
C). A boolean value
D). An object