How can you check if a variable is an array in JavaScript?

What is the result of typeof [] in JavaScript?

A). array

B). object

C). list

D). undefined

Which of the following values is considered falsy in JavaScript?

A). 1

B). 0

C). 0

D). {}

In JavaScript, what will be the type of a variable x after x = 5 + true;?

A). number

B). string

C). boolean

D). undefined

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 initial type of a variable declared with let a;?

A). null

B). number

C). undefined

D). object

What happens when you add a number and a string in JavaScript?

A). An error is thrown

B). The number is converted to a string

C). The string is converted to a number

D). Both are converted to boolean

What will typeof null return in JavaScript?

A). null

B). undefined

C). object

D). number

What is the type of the value returned by JSON.parse('null')?

A). null

B). string

C). object

D). undefined

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 the following code: let z = '123'; z = Number(z); console.log(typeof z);?

A). string

B). number

C). undefined

D). boolean