Web Reference: Description The flatMap() method maps all array elements and creates a new flat array. flatMap() creates a new array from calling a function for every array element. flatMap() does not execute the function for empty elements. flatMap() does not change the original array. This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020. 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.
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