Run results for: DataView vs Uint32Array find

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.1 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Uint32Array

17/s

DataView

16/s

View exact numbers

Test name	Executions per second
✓ Uint32Array	17 Ops/sec
DataView	16 Ops/sec

Script Preparation code:

var size = 1048576;
var buf = new ArrayBuffer(size);
var view = new DataView(buf);
var u32view = new Uint32Array(buf);

var data = [];

for (let i = 0; i < u32view.length; i++) {
	u32view[i] = 10000*Math.random();
}

Tests:

DataView
for (let i = 0; i < buf.byteLength; i += 4) { if (view.getUint32(i, true) == 0x48384992) console.log('found'); }
Uint32Array
for (let i = 0; i < u32view.length; ++i) { if (view[i] == 0x48384992) console.log('found'); }