Run results for: is find arrays cached

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:94.0) Gecko/20100101 Firefox/94.0

Browser: Firefox 94

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
single find (500)	281695.9 Ops/sec
double same find (500)	103856.5 Ops/sec
double different find (500)	103414.5 Ops/sec
single find (100)	1599733.8 Ops/sec
double same find (100)	494500.4 Ops/sec
double different find (100)	500015.2 Ops/sec

Script Preparation code:

var data = Array(1000).fill().map((_, id) => ({
    id,
    name: `${id}_name`
}));
var data2 = Array(1000).fill().map((_, id) => ({
    id,
    name: `${id}_name`
}));

Tests:

single find (500)
const found = data.find((item) => item.id === 500); const result = { id: found?.id, name: found?.name, };
double same find (500)
const result = { id: data.find((item) => item.id === 500)?.id, name: data.find((item) => item.id === 500)?.name, };
double different find (500)
const result = { id: data.find((item) => item.id === 500)?.id, name: data2.find((item) => item.id === 500)?.name, };
single find (100)
const found = data.find((item) => item.id === 100); const result = { id: found?.id, name: found?.name, }
double same find (100)
const result = { id: data.find((item) => item.id === 100)?.id, name: data.find((item) => item.id === 100)?.name, };
double different find (100)
const result = { id: data.find((item) => item.id === 100)?.id, name: data2.find((item) => item.id === 100)?.name, };

Run results for: is find arrays cached

single find (500)

double same find (500)

double different find (500)

single find (100)

double same find (100)

double different find (100)