The first argument is the startIndex, and the second is the endIndex. This method takes two optional arguments. Instead, it creates a new shallow copy of the original array. It does not modify or change the original array. The array slice javascript method copies a chunk (or slice) from an array and returns that copied part as a new array. I've put together this guide on these two methods so that you can slice and splice JavaScrips arrays like a pro. Javascript Slice() and splice() methods look similar, and they sound similar, so it's very easy to get confused and remember which is which. The two methods are among the most used array methods when it comes to adding, updating, or removing items in an array, and cloning an array or copying a portion of an array.

If end is greater than the length of the array, Slice will extract all the way to the end of the array.Do you find yourself looking up the difference between javascript splice () and splice() methods all the time? If end is omitted, slice extracts all the way to the end of the original array. Slice (-2,-1) extracts the penultimate element of the array to the last element (excluding the last element, i.e. If this parameter is negative, it indicates the penultimate element in the original array at the end of the extraction. Slice (1,4) extracts all elements (elements indexed 1, 2, and 3) from the second element through the fourth element in the array. Slice extracts all elements indexed from begin to end (including begin, but not end). If BEGIN exceeds the index range of the original array, an empty array is returned.Įxtract the index at the end (starting at 0) and end the extraction of the original array element at that index. The following figure shows the ordering and definition of subscripts. If you supply a negative number, the negative number will count backwards from the last element in the array, which has a value of -1. If you specify a subscript, the array you return will run from the current subscript to the end. Look at the following code: const animals =

The important thing to notice about this function is that the end element is not in the copied array.

The slice() method returns a new array object that is a shallow copy (including begin, but not end) of the array determined by begin and end.

Slice javascript array