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isNil javascript Code Snippet in 2023

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Last Updated: 23 September 2023

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

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