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30-seconds-of-code/snippets/isNil.md
2022-05-02 18:51:12 +03:00

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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