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lucasff/flatten.js

Created September 18, 2019 14:54
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JS flatten
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flatten.js
const flatten = (arr, result = []) => {
if (!Array.isArray(arr)){
return [...result, arr];
}
arr.forEach((elem) => {
result = flatten(elem, result)
})
return result
}
console.log(flatten([1, [2, 3], [4, [5, 6, [7, 8]]]])) // [ 1, 2, 3, 4, 5, 6, 7, 8 ]
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