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
Given let a = '10'; let b = 20;, what is the result of a + b?
A). 30
B). 1020
C). 30
D). NaN
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 will typeof null return in JavaScript?
A). null
B). undefined
C). object
D). number
Given the code: let y = 10; y = true;, what is the type of y after execution?
A). number
B). boolean
C). string
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What will be the result of typeof function() {} in JavaScript?
A). function
B). object
C). undefined
D). method
What is the result of the following code: let x = 5; x = 'hello'; console.log(typeof x);?
A). number
B). string
C). undefined
D). object
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
What is the type of the value returned by parseFloat('3.14abc')?
A). number
B). string
C). NaN
D). undefined
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
How can you check if a variable is an array in JavaScript?
A). typeof variable === 'array'
B). Array.isArray(variable)
C). variable instanceof array
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