Answer & Solution
Answer: Option D
Solution:
Primitive data types in JavaScript are passed by value, meaning their values are copied when passed to functions or assigned to variables.
Q
Which of the following statements is true about primitive data types 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 is a valid way to represent the value null in JavaScript?
A). undefined
B). NULL
C). null
D). None of the above
What is the result of the expression true == 1 in JavaScript?
A). true
B). false
C). Error
D). 1
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 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 symbol is used to represent a boolean value in JavaScript?
A). #
B). $
C). !
D). true/false
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 valid JavaScript symbol?
A). symbol
B). &symbol
C). #symbol
D). Symbol('description')
What is the result of the expression true + false in JavaScript?
A). true
B). false
C). 1
D). 0
What is a primitive value in JavaScript?
A). A complex data structure
B). A basic data type
C). A function
D). An array