Run results for: Array.map vs preallocation ......

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.1.1

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
dynamic	34.6 Ops/sec
Preallocation	14.2 Ops/sec

Tests:

dynamic
const array = []; for (let i=0; i<10000000; i++) { array[i] = 1; }
Preallocation
const array = new Array(10000000); for (let i=0; i<10000000; i++) { array[i] = i; }

Run results for: Array.map vs preallocation ......

dynamic

Preallocation