Run results for: uint32 DataView vs Direct Calculate

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/119.0.6045.169 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 119

Operating system: iOS 16.6

Device Platform: Mobile

Date tested: one year ago

DataView

249/s

Direct

184/s

View exact numbers

Test name	Executions per second
✓ DataView	249 Ops/sec
Direct	184 Ops/sec

Script Preparation code:

var bytes = new Uint8Array([1,2,3,4])
var offset = 0

Tests:

DataView
for (var i = 0; i < 10000; i++){ const x = new DataView(bytes.buffer, bytes.byteOffset).getUint32(offset) }
Direct
for (var i = 0; i < 10000; i++){ const x = ( bytes[offset] << 24 | bytes[offset + 1] << 16 | bytes[offset + 2] << 8 | bytes[offset + 3] ) }