Negative numbers are used: when negative numbers are used, the method will treat those as offsets from the end position instead of normal indices.ar.slice(startInd, endInd): this will return a new array with the same elements as the original array starting from index startInd up to the index endNum, not including the item at index endNum itself.Ī few examples of how this method can be used are given below:Ī few notes on how this method behaves with certain arguments:.ar.slice(startInd): this will return a new array with the same elements as the original array starting from index startInd.ar.slice(): the method will return a new array with the same elements as the original array.There are three ways we can call this method: The slice method will return an array containing a portion of the items in the original array without changing the original array itself. In the sections below, we'll review each Array method individually, the discuss the source of confusion between the two methods and what kinds of bugs can arise when the wrong method is used.
They have similar names and similar functionalities, but using the wrong one can cause cause bugs which can be hard to track down.
When it comes to working with JavaScript arrays, one of the most common mistakes is confusing slice with splice.
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