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

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 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

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 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

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

A). number

B). string

C). boolean

D). undefined

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

What is the type of the value returned by parseFloat('3.14abc')?

A). number

B). string

C). NaN

D). undefined