Run results for: very big Array vs TypedArray write performance

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.3 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 26

Operating system: iOS 18.7

Device Platform: Mobile

Date tested: 6 months ago

Benchmark engine: Benchmark.js

TypedArray write

2K/s

Array write

560/s

View exact numbers

Test name	Executions per second
✓ TypedArray write	1,893 Ops/sec
Array write	560 Ops/sec

Tests:

Array write
var array = new Array(1500000).fill(0); for (let i=0; i<array.length; i++) { array[i] = array[i] + 1; }
TypedArray write
var typedArray = new Uint8Array(1500000).fill(0); for (let i=0; i<typedArray.length; i++) { typedArray[i] = typedArray[i] + 1; }