Run results for: Test Loop Set Data

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser: Chrome 125

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

15K/s

1K/s

View exact numbers

Test name	Executions per second
✓ 2	14,992 Ops/sec
1	1,144 Ops/sec

Script Preparation code:

var arr = new Array(15000);
arr.fill({ id: 0, text: "test" });
arr = arr.map((el, idx) => el.id = idx);
var foo = Math.floor(Math.random() * 15000);

Tests:

1
const index = arr.findIndex((itm) => itm.id === foo); const newArr = [...arr]; arr[index] = {...arr[index], text: "edittest"}
2
const newArr = arr.map((row, index) => { if (index === 1) { return { ...row, text: "edittest" } } })