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30-seconds-of-code/snippets/isBoolean.md
2022-06-08 12:30:49 +03:00

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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 typeof to check if a value is classified as a boolean primitive.
const isBoolean = val => typeof val === 'boolean';
isBoolean(null); // false
isBoolean(false); // true