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Run results for:
DataView vs Uint8Array (read bytes)
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<iframe src="https://measurethat.net/Embed?id=505611" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 17_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/122.2 Mobile/15E148 Safari/605.1.15
Browser:
Mobile Safari 17
Operating system:
iOS 17.2.1
Device Platform:
Mobile
Date tested:
2 years ago
Test name
Executions per second
read bytes (DataView)
70738.9 Ops/sec
read bytes (Uint8Array)
67769.8 Ops/sec
Script Preparation code:
var size = 0xFF; var buf = new ArrayBuffer(size); var view = new DataView(buf); var byte = new Uint8Array(buf); var test_sum = 0;
Tests:
read bytes (DataView)
let sum = 0; for (let i=0; i < size; i++) { let val = view.getUint8(i); sum += val; sum |= val; sum ^= val; } test_sum = sum;
read bytes (Uint8Array)
let sum = 0; for (let i=0; i < size; i++) { let val = byte[i]; sum += val; sum |= val; sum ^= val; } test_sum = sum;