Run results for: DataView vs Uint32Array find

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36 Edg/131.0.0.0

Browser: Chrome 131

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

DataView

444/s

Uint32Array

251/s

View exact numbers

Test name	Executions per second
✓ DataView	444 Ops/sec
Uint32Array	251 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'); }