Answer & Solution
Answer: Option B
Solution:
When a number is added to a string, the number is converted to a string and concatenated.
Q
What happens when you add a number and a string in JavaScript?
Related Questions on Average
Which of the following values is considered falsy in JavaScript?
A). 1
B). 0
C). 0
D). {}
Given let a = '10'; let b = 20;, what is the result of a + b?
A). 30
B). 1020
C). 30
D). NaN
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 initial type of a variable declared with let a;?
A). null
B). number
C). undefined
D). object
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 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 is the type of the value returned by JSON.parse('null')?
A). null
B). string
C). object
D). undefined
What will typeof NaN return in JavaScript?
A). number
B). NaN
C). undefined
D). object
What will be the result of typeof function() {} in JavaScript?
A). function
B). object
C). undefined
D). method
What is the type of the value returned by parseFloat('3.14abc')?
A). number
B). string
C). NaN
D). undefined