![]() ![]() Thus it provides a key building block for writing functional JavaScript. The slice method provides a mechanism for creating a shallow copy of a subset of a list, without modifying the original list. The JavaScript array slice method fits both of these criteria. Functional programming requires pure functions, functions that do not cause side effects or modify their input data.Functional programming, particularly higher level functions, works heavily with lists of data.The JavaScript array slice method is one of the most powerful and commonly used built-ins in the JavaScript language.Īnd with the rise of React and other functionally oriented JavaScript practices, it is becoming even more important, for 2 key reasons: ![]()
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