at() has a number of advantages:
- cleaner, and easier, to read
- does relative indexing – so no more array.length
- supports negative numbers, to easily select from the end of the array
To use the .at() method, you first need to create an array and populate it with some values.
For example, to create an array with some values
myArray = ["apple", "orange", "banana", "kiwi", "mango"];
To use the .at() method to get the first item in the array
firstItem = myArray.at(0); // Output: "apple"
To use the .at() method to get the last item in the array
lastItem = myArray.at(myArray.length - 1); // Output: "mango"
To use the .at() method to get the second-last item in the array
secondLastItem = myArray.at(myArray.length - 2); // Output: "kiwi"
Remember that the .at() method will return undefined if the index you provide is out of bounds, so make sure to check the length of the array before trying to access items at the end of the array.