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
Which of the following is a valid JavaScript symbol?
A). symbol
B). &symbol
C). #symbol
D). Symbol('description')
Which of the following is a primitive data type in JavaScript?
A). Array
B). Object
C). Function
D). String
What happens when you add two numbers using the + operator in JavaScript?
A). The numbers are concatenated
B). The numbers are multiplied
C). The numbers are added
D). An error occurs
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 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
What does the Symbol data type represent in JavaScript?
A). A unique identifier
B). A number
C). A boolean value
D). An object
What is a primitive value in JavaScript?
A). A complex data structure
B). A basic data type
C). A function
D). An array
Which primitive value represents absence of value or no value assigned?
A). undefined
B). null
C). 0
D). 'undefined'
What is the result of the expression true == 1 in JavaScript?
A). true
B). false
C). Error
D). 1