433 B
433 B
title, tags, expertise, cover, firstSeen, lastUpdated
| title | tags | expertise | cover | firstSeen | lastUpdated |
|---|---|---|---|---|---|
| Value is boolean | type | beginner | blog_images/book-stopper.jpg | 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
typeofto check if a value is classified as a boolean primitive.
const isBoolean = val => typeof val === 'boolean';
isBoolean(null); // false
isBoolean(false); // true