Run results for: TypedArray vs Array

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_3_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.3.2

Device Platform: Mobile

Date tested: one year ago

Benchmark engine: Benchmark.js

simple array random get

223.0M/s

uint32 array random get

218.7M/s

View exact numbers

Test name	Executions per second
✓ simple array random get	222,991,056 Ops/sec
uint32 array random get	218,696,016 Ops/sec

Script Preparation code:

uint32Array = new Uint32Array(1e5);
simpleArray = new Array(1e5);
temp = 0;
for(let i = 0; i < 1e5; i++) {
  uint32Array[i] = simpleArray[i] = Math.floor(Math.random() * (2 << 32));
}

Tests:

uint32 array random get
temp = uint32Array[Math.floor(Math.random() * 1e5)];
simple array random get
temp = simpleArray[Math.floor(Math.random() * 1e5)];