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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays What is an Array?

Posted by William Bailey
William Bailey
4,585 Points

Reverse indexing a list

Is there a way to access list items backwards like in python? For example, var list = [1, 2, 3, 4, 5]; console.log(list[0]); This would log the first item, 1 to the console, Why can we not also access the last item in the list by doing something like this: console.log(list[-1]);

1 Answer

Michael Hulet
Michael Hulet
47,912 Points
Michael Hulet
Michael Hulet
47,912 Points

Unfortunately, JavaScript doesn't do the reverse indexing thing for arrays (which is one of the many reasons I like Python infinitely better :P). The closest you can get is to call array.reverse() and forward-indexing that way. For example:

let test = ["One", "Two", "Three"];

console.log(test[0]); // Logs "One"
console.log(test[1]); // Logs "Two"
console.log(test[2]); // Logs "Three"

test.reverse();

console.log(test[0]); // Logs "Three"
console.log(test[1]); // Logs "Two"
console.log(test[2]); // Logs "One"
William Bailey
William Bailey
4,585 Points

Me too.

import antigravity

XD! Thanks for your quick response!