Answer & Solution
Answer: Option A
Solution:
Symbols in JavaScript represent unique identifiers and are often used as property keys in objects.
Q
What does the Symbol data type represent in JavaScript?
Related Questions on Average
What is the result of the expression undefined + null in JavaScript?
A). undefined
B). null
C). 0
D). Error
What is the data type of the value NaN in JavaScript?
A). Number
B). String
C). Object
D). Undefined
Which symbol is used to represent a boolean value in JavaScript?
A). #
B). $
C). !
D). true/false
What is the default value of a variable in JavaScript if it is not initialized?
A). null
B). undefined
C). 0
D). 'undefined'
What is a primitive value in JavaScript?
A). A complex data structure
B). A basic data type
C). A function
D). An array
Which of the following statements is true about JavaScript's null value?
A). It represents an empty string
B). It represents a non-existent value
C). It represents a boolean value
D). It represents a number
Which of the following is a valid JavaScript symbol?
A). symbol
B). &symbol
C). #symbol
D). Symbol('description')
Which of the following statements about primitive values in JavaScript is true?
A). They are mutable
B). They are passed by reference
C). They are stored on the heap
D). They are immutable
Which of the following is not a primitive value in JavaScript?
A). Number
B). Boolean
C). Object
D). String
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