100 javascript interview question

Question 1

what is javascript?

Answer 1

javascript is a client-side scripting language understood by the browser and will be added to the HTML codes

Question 2

Javascript data types

Answer 2

Boolean, string, number, null, undefined, symbol,object, function

Question 3

why use NAN in js

Answer 3

when nan is used, it returns true when it doesn’t contain a number and false when it does