Web Reference: Jul 20, 2025 · flatMap can be used as a way to add and remove items (modify the number of items) during a map. In other words, it allows you to map many items to many items (by handling each input item separately), rather than always one-to-one. In this sense, it works like the opposite of filter. Jul 26, 2022 · By Kenechukwu Nwobodo In this article I'm going to explain how to use the new array methods introduced in ES2019 (EcmaScript 2019) – flat () and flatMap (). You use these methods to flatten arrays. Get the note and exercises: https://animecoders.com/practiceFree full-stack roadmap: https://animecoders.com/roadmap
YouTube Excerpt: Get the note and exercises: https://animecoders.com/practice Free full-stack roadmap: https://animecoders.com/roadmap.
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