The index of the last element is -1, and the index of second last element is -2, and so on. In JavaScript slice() method, you can use negative index for start and end parameters. Let almostFull = cars.slice(second, secondLast) slicing from the second element to second last element The new array will then be returned at the end of the execution of function. Programmers are then free from the burden of tracking the state of the original array. When using javascript array slice, remember this function will not modify the original array. Let middleIndex = Math.floor(cars.length / 2) Getting started with JavaScript array slice. JavaScript has a built-in array constructor new Array (). slicing the hole array from starting to end Zero-based index at which to start extraction. JavaScript () Parameters start (optional) JavaScript () SyntaxĪs you can see you can use slice() method in multiple ways it depends on you how you want to use because as you have seen in above code you can use negative indexes as well to access the values of array to create your own new array as of needed.
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