Run results for: key versus integer

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Script Preparation code:

var foo = { bar : 1, qux : 2 }
var bar = [ 1, 2 ]
var __FOO__ = 0;
var __BAR__ = 1;

Tests:

property
let sum = 0; for (let i = 0 ; i < 1000 ; i++) { foo.bar += i; foo.qux += i; sum += foo.bar; sum += foo.qux; }
integer
let sum = 0; for (let i = 0 ; i < 1000 ; i++) { bar[0] += i; bar[1] += i; sum += bar[0]; sum += bar[1]; }
key
let sum = 0; for (let i = 0 ; i < 1000 ; i++) { bar[__FOO__] += i; bar[__BAR__] += i; sum += bar[__FOO__]; sum += bar[__BAR__]; }