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

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: one year ago

Test name	Executions per second
[i]	6.0 Ops/sec
.at(i)	3.3 Ops/sec
?.[i]	2.9 Ops/sec

Script Preparation code:

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

Tests:

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

;