JavaScript - remove all falsy values from array

In this article, we would like to show you how to remove all falsy values from an array in JavaScript.

Practical example

In this example, we use Boolean constructor to remove all falsy values from array.

// ONLINE-RUNNER:browser;

var falsyValues = [false, 0, -0, 0n, '', '', ``, null, undefined, NaN];

var result = falsyValues.filter(Boolean);

console.log(JSON.stringify(result)); // []

Note:

The result is an empty array because the input array (falsyValues) contains only values considered as falsy in JavaScript.

See also

1. JavaScript - Truthy and Falsy values

References

1. Boolean - JavaScript | MDN
2. Falsy - MDN Web Docs Glossary: Definitions of Web-related terms