What is an array?
An array in Javascript allows you to store a collection of data under a single variable. Javascript arrays can be resized and hold a variety of data types.
The at() method accepts an integer value and returns the position (index) of the element in the array.
In some situations, we need to return the last element or the second-to-last element.
The at() method accepts an integer value and returns the position (index) of the element in the array.
In some situations, we need to return the last element or the second-to-last element.
However, we can't use the array[-2] in an array because it returns undefined. We can use the standard way array[array.length - 2].
By using the at() method, we can easily get the position of the element (index ) in an array using positive and negative integers.
By using the at() method, we can easily get the position of the element (index ) in an array using positive and negative integers.
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