Web Reference: Sep 8, 2025 · Using Array.prototype.flatMap (), you can remove falsy values by mapping each element to an array containing the element if it's truthy, or an empty array if it's falsy. The resulting arrays are then flattened into a single array of truthy values. Oct 2, 2015 · Since you want to get rid of "falsy" values, just let JavaScript do its thing: return arr.filter(function(v) { return !!v; }); The double-application of the ! operator will make the filter callback return true when the value is "truthy" and false when it's "falsy". Nov 27, 2022 · How to remove fasly values or only some falsy values from a JavaScript array using the filter () method and native Boolean function.
YouTube Excerpt: Source code: https://openjavascript.info/2022/11/27/
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