javascript array methods

Direct answer: Use map to transform every element, filter to keep some, reduce to collapse many into one, and find/some/every to ask questions without building a new array. Since ES2023, toSorted, toReversed, toSpliced and with return copies, so you can drop the […arr].sort() workaround.Run [‘1′,’2′,’3’].map(parseInt) in any console and you get [1, NaN, NaN]. map … Read more