Answer & Solution
Answer: Option A
Solution:
The true boolean is coerced to the number 1, resulting in the sum 6, which is a number.
Q
In JavaScript, what will be the type of a variable x after x = 5 + true;?
Related Questions on Average
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 will be the result of typeof function() {} in JavaScript?
A). function
B). object
C). undefined
D). method
What will be the result of the following code: let z = '123'; z = Number(z); console.log(typeof z);?
A). string
B). number
C). undefined
D). boolean
What does the parseInt function do in JavaScript?
A). Converts a number to a string
B). Converts a string to an integer
C). Converts a boolean to a number
D). Converts an array to a number
What is the type of the value returned by parseFloat('3.14abc')?
A). number
B). string
C). NaN
D). undefined
Which operator is used to determine the type of a variable in JavaScript?
A). typeof
B). instanceof
C). type
D). isType
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 of the following values is considered falsy in JavaScript?
A). 1
B). 0
C). 0
D). {}
Given the code: let y = 10; y = true;, what is the type of y after execution?
A). number
B). boolean
C). string
D). object
What will typeof null return in JavaScript?
A). null
B). undefined
C). object
D). number