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

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

Which of the following values is considered falsy in JavaScript?

A). 1

B). 0

C). 0

D). {}

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

A). null

B). number

C). undefined

D). object

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

A). number

B). string

C). boolean

D). undefined

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 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 will typeof null return in JavaScript?

A). null

B). undefined

C). object

D). number

Which operator is used to determine the type of a variable in JavaScript?

A). typeof

B). instanceof

C). type

D). isType

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