Functional Programming with JavaScript

I'm really glad you liked the article.

So to answer your question, as long as your function produces the same output even without an input value and that too without accessing anything from the outside view , it is a pure function.

const num =7 ;
const sentence = () => {return 'It is a good day' ; }

Here sentence function doesn't have an input value, but it'll produce the same result always. Hence a pure function.

Okay thanks for the feedback Saurabh Kamboj