Answer & Solution
Answer: Option B
Solution:
The variable y is reassigned to a boolean value true, changing its type to boolean.
Q
Given the code: let y = 10; y = true;, what is the type of y after execution?
Related Questions on Average
What does the isNaN function do?
A). Checks if a value is not a number
B). Converts a value to a number
C). Checks if a value is a number
D). Converts a value to NaN
In JavaScript, what will be the type of a variable x after x = 5 + true;?
A). number
B). string
C). boolean
D). undefined
What will be the result of typeof function() {} in JavaScript?
A). function
B). object
C). undefined
D). method
Which operator is used to determine the type of a variable in JavaScript?
A). typeof
B). instanceof
C). type
D). isType
What will typeof NaN return in JavaScript?
A). number
B). NaN
C). undefined
D). object
Which of the following values is considered falsy in JavaScript?
A). 1
B). 0
C). 0
D). {}
What is the type of the value returned by JSON.parse('null')?
A). null
B). string
C). object
D). undefined
What does it mean that JavaScript is dynamically typed?
A). Variables do not have types
B). Variables can change type
C). Variables must be declared with a type
D). Variables cannot change type
Which type conversion happens automatically in the expression 3 + '5'?
A). Number to String
B). String to Number
C). Boolean to String
D). Number to Boolean
What is the type of the value returned by parseFloat('3.14abc')?
A). number
B). string
C). NaN
D). undefined