Answer & Solution
Answer: Option A
Solution:
Symbols are unique and immutable values introduced in ES6.
Q
Which data type represents unique and immutable values in JavaScript introduced in ES6?
Related Questions on Average
What is the data type of the value undefined in JavaScript?
A). Number
B). Boolean
C). String
D). Undefined
What is the data type of the value true in JavaScript?
A). Number
B). String
C). Boolean
D). Undefined
Which data type represents a block of reusable code in JavaScript?
A). String
B). Object
C). Function
D). Number
What is the data type of the value 42 in JavaScript?
A). String
B). Boolean
C). Number
D). Null
Which data type represents positive infinity in JavaScript?
A). Infinity
B). Number
C). NaN
D). Null
What will the following code snippet output: let a = 10; a += '5'; console.log(a); in JavaScript?
A). '105'
B). 105
C). 15
D). '15'
Which data type represents an intentional absence of any value in JavaScript?
A). Null
B). Undefined
C). String
D). Number
What is the result of 0 / 0 in JavaScript?
A). Infinity
B). 0
C). NaN
D). 1
Which of these is a complex or reference data type in JavaScript?
A). Number
B). Boolean
C). Object
D). String
What will be the result of typeof 'hello' in JavaScript?
A). String
B). Number
C). Undefined
D). Function