Run results for: [i] vs .at(i)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:108.0) Gecko/20100101 Firefox/108.0

Browser: Firefox 108

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Script Preparation code:

var a = Array(100_000_000).fill(1);

AخA
 
var a = Array(100_000_000).fill(1);

Tests:

let total = 0;
for (let i = 0; i < a.length; i++) {
  total += a[i];
}

 
let total = 0;for (let i = 0; i < a.length; i++) {  total += a[i];}

let total = 0;
for (let i = 0; i < a.length; i++) {
  total += a.at(i);
}

 
let total = 0;for (let i = 0; i < a.length; i++) {  total += a.at(i);}

let total = 0;
for (let i = 0; i < a.length; i++) {
  total += a?.[i];
}

 
let total = 0;for (let i = 0; i < a.length; i++) {  total += a?.[i];}