What is the data type of true in JavaScript?

What is the data type of an array in JavaScript?

A). Array

B). Object

C). Collection

D). List

What is the output of '5' + 3?

A). 8

B). 53

C). 8

D). Error

What is the data type of 42 in JavaScript?

A). String

B). Boolean

C). Number

D). Object

How do you declare a variable with an undefined value?

A). let x;

B). let x = '';

C). let x = 0;

D). let x = null;

What is the output of typeof function() {}?

A). function

B). object

C). undefined

D). number

Which symbol is used to denote a string template literal?

A). ''

B).

C). ``

D). {}

Which method can be used to convert a string to a number in JavaScript?

A). parseInt()

B). toString()

C). toNumber()

D). parseStr()

Which function can convert a number to a string in JavaScript?

A). toString()

B). parseInt()

C). String()

D). Number()

What will typeof NaN return?

A). number

B). NaN

C). undefined

D). object

What is the output of typeof null?

A). null

B). undefined

C). object

D). number