JSFiddle - React, Tailwind, and code Playground

by robindrexler

JavaScript

const data = [
	[1, 2, 3], 
	[4, 5, 6], 
	[9, 8, 9]
 ]


let ltr = 0;
let j = data.length - 1;
for (let i = 0; i < data.length; i++) {
  ltr += data[i][j];
  console.log(data[i][j])
  j--;
}

console.log(ltr)