Run results for: Wtf why is the last one fastest?! - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/116.0

Browser: Firefox 116

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Array get	436888128.0 Ops/sec
Object get	441472832.0 Ops/sec
Array new and get	437484544.0 Ops/sec
Object set and get	440697024.0 Ops/sec

Script Preparation code:

var a = [ "a", "b" ];
var b = { a: "a", b: "b" };

Tests:

Array get
let c = a[ 0 ] + a[ 1 ];
Object get
let c = b.a + b.b;
Array new and get
let z = [ "a", "b" ] let c = a[ 0 ] + a[ 1 ];
Object set and get
let z = { a: "a", b: "b" }; let c = z.a + z.b;