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

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

A). number

B). string

C). boolean

D). undefined

Which of the following values is considered falsy in JavaScript?

A). 1

B). 0

C). 0

D). {}

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

A). typeof

B). instanceof

C). type

D). isType

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

A). null

B). number

C). undefined

D). object

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 NaN return in JavaScript?

A). number

B). NaN

C). undefined

D). object

What will typeof null return in JavaScript?

A). null

B). undefined

C). object

D). number

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

A). function

B). object

C). undefined

D). method

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