How Javascript Array Slice Worksīefore we dive into some of the more advanced uses, lets look at the basics of the slice method.Īs shown in the MDN documentation, slice isĪ method on an array that takes up to 2 arguments: arr. Slice leaves the original array intact and returns a shallow copy of selected items, splice modifies the original array. In this post we'll master the slice method by example, exploring 8 different ways it can be used.Ĭaution: The slice method is not to be confused with the splice method, which modifies an array in place. 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.
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