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

title, tags, expertise, firstSeen, lastUpdated

title	tags	expertise	firstSeen	lastUpdated
Value is boolean	type	beginner	2017-12-17T17:55:51+02:00	2020-09-15T16:28:04+03:00

Checks if the given argument is a native boolean element.

• Use typeof to check if a value is classified as a boolean primitive.

const isBoolean = val => typeof val === 'boolean';

isBoolean(null); // false
isBoolean(false); // true