30-seconds-of-code/snippets/isNil.md

title, tags, expertise, cover, firstSeen, lastUpdated

title	tags	expertise	cover	firstSeen	lastUpdated
Value is nil	type	beginner	blog_images/river-houses.jpg	2018-01-16T16:50:21+02:00	2020-10-20T23:02:01+03:00

Checks if the specified value is null or undefined.

• Use the strict equality operator to check if the value of val is equal to null or undefined.

const isNil = val => val === undefined || val === null;

isNil(null); // true
isNil(undefined); // true
isNil(''); // false