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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Browser: Chrome 116

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Array get	6768014.5 Ops/sec
Object get	6704279.0 Ops/sec
Array new and get	6725368.5 Ops/sec
Object set and get	742620736.0 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;