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 5 + '5' in JavaScript?
A). 10
B). '55'
C). '10'
D). Error
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 way to represent the value null in JavaScript?
A). undefined
B). NULL
C). null
D). None of the above
Which primitive value represents absence of value or no value assigned?
A). undefined
B). null
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
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 JavaScript symbol?
A). symbol
B). &symbol
C). #symbol
D). Symbol('description')
What is the result of the expression undefined + null in JavaScript?
A). undefined
B). null
C). 0
D). Error
What is the result of the expression true + false in JavaScript?
A). true
B). false
C). 1
D). 0
Which of the following is not a primitive value in JavaScript?
A). Number
B). Boolean
C). Object
D). String