Run results for: Get and set in typed array vs simple array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:132.0) Gecko/20100101 Firefox/132.0

Browser: Firefox 132

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

array

381.3M/s

typedArray

29.8M/s

View exact numbers

Test name	Executions per second
✓ array	381,324,352 Ops/sec
typedArray	29,756,640 Ops/sec

Script Preparation code:

var size = 1024;
var typedArray = new Int32Array(size);
var array = [];

for(let i = 0; i < size; i++) {
  typedArray[i] = Math.random();
  array[i] = Math.random();
}

Tests:

typedArray
const i = Math.round(Math.random() * size); typedArray[i] = typedArray[i] * 2;
array
const i = Math.round(Math.random() * size); array[i] = array[i] * 2;