Answer & Solution
Answer: Option A
Solution:
Despite being considered a bug in JavaScript, the typeof null returns "object".
11.
What will let x = null; console.log(typeof x); output in JavaScript?
12.
What does NaN represent in JavaScript?
13.
What is the result of 0 / 0 in JavaScript?
14.
Which data type represents positive infinity in JavaScript?
15.
What will let x = '10'; let y = x - 5; console.log(y); output in JavaScript?
16.
What is the outcome of typeof undefined in JavaScript?
17.
Which data type represents a block of reusable code in JavaScript?
18.
What will the following code snippet output: let a = 10; a += '5'; console.log(a); in JavaScript?
19.
What is the data type of the value 'null' (with quotes) in JavaScript?
20.
Which of the following is not a valid data type in JavaScript?