Run results for: Uint8Array.subarray vs Uint8Array.slice

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_5_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/138.0.7204.56 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 138

Operating system: iOS 18.5.0

Device Platform: Mobile

Date tested: one year ago

Uint8Array.subarray

38.9M/s

Uint8Array.slice

31.9M/s

View exact numbers

Test name	Executions per second
✓ Uint8Array.subarray	38,861,884 Ops/sec
Uint8Array.slice	31,924,240 Ops/sec

Script Preparation code:

var bytes = [84,104,105,115,32,105,115,32,97,32,115,97,109,112,108,101,32,112,97,114,97,103,114,97,112,104,46];
var bufferArray = new Uint8Array(bytes);

Tests:

Uint8Array.subarray
bufferArray.subarray(3, 13);
Uint8Array.slice
bufferArray.slice(3, 13);