Run results for: array slice vs while loop

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
While	724422.9 Ops/sec
slice	9728782.0 Ops/sec

Script Preparation code:

const items = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16];
const startIndex = 0;

Tests:

While
const endIndex = 14; let index = startIndex; const trimmedItems = []; while (index <= endIndex && index < items.length) { trimmedItems.push(items[index]); index++; }
slice
const trimmedItems = items.slice(startIndex, 15)