Here is the slice syntax: array.slice(from, until) The splice( ) method changes an array, by adding or removing elements from it. The slice( ) method copies a given part of an array and returns that copied part as a new array. Use negative numbers to select from the end of an array.

If omitted, all elements from the start position and to the end of the array will be selected. An integer that specifies where to end the selection. Use negative numbers to select from the end of an array.Īrgument 2: Optional. An integer that specifies where to start the selection (The first element has an index of 0). The new item(s) to be added to the array.Īrgument 1: Required. And if not passed, all item(s) from provided index will be removed.Īrgument 3.n: Optional. If set to 0(zero), no items will be removed. Splice() method can take n number of arguments:Īrgument 2: Optional. The splice() method changes the original array and slice() method doesn’t change the original array. The slice() method returns the selected element(s) in an array, as a new array object. The splice() method returns the removed items in an array. Returns: An array containing the extracted elements. If end is negative it is treated as 'Math.max((array.length + begin),0)' as per spec (example provided below) effectively from the end of array. Last index for extraction but not including (default array.length). If begin is negative it is treated as 'Math.max((array.length + begin), 0)' as per spec (example provided below) effectively from the end of array. Remove last element (start -> array.length+start = 3)Ĭonsole.log('Elements deleted:', array.splice(-1, 1), 'mutated array:', array) Console.log('Elements deleted:', array.splice(0, 1), 'mutated array:', array)

Slice in javascript array