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

title, tags

title	tags
isNil	type,beginner

Returns true if the specified value is null or undefined, false otherwise.

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