What will be the result of the following code: let z = "123"; z = Number(z); console.log(typeof z);?

What will be the result of typeof function() {} in JavaScript?

A). function

B). object

C). undefined

D). method

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

Given the code: let y = 10; y = true;, what is the type of y after execution?

A). number

B). boolean

C). string

D). object

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 is the initial type of a variable declared with let a;?

A). null

B). number

C). undefined

D). object

Which of the following values is considered falsy in JavaScript?

A). 1

B). 0

C). 0

D). {}

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 does the isNaN function do?

A). Checks if a value is not a number

B). Converts a value to a number

C). Checks if a value is a number

D). Converts a value to NaN

What will typeof null return in JavaScript?

A). null

B). undefined

C). object

D). number