Answer & Solution
Answer: Option A
Solution:
JavaScript converts the number 3 to the string '3' and concatenates it with '5', resulting in '35'.
Q
Which type conversion happens automatically in the expression 3 + '5'?
Related Questions on Average
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
Given let a = '10'; let b = 20;, what is the result of a + b?
A). 30
B). 1020
C). 30
D). NaN
What is the result of typeof [] in JavaScript?
A). array
B). object
C). list
D). undefined
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 initial type of a variable declared with let a;?
A). null
B). number
C). undefined
D). object
Which operator is used to determine the type of a variable in JavaScript?
A). typeof
B). instanceof
C). type
D). isType
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