Run results for: Direct Array vs Typed Array vs Array read performances

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.1

Device Platform: Mobile

Date tested: 9 months ago

Benchmark engine: Benchmark.js

new TypedArray

1K/s

Direct Array

247/s

new Array

246/s

View exact numbers

Tests:

new TypedArray
let arr = new Float32Array(1000000); arr[0] = Math.random(); var sum = 0; for (let i = 0; i < 1000000; i++) { sum+= arr[i]; }
new Array
let arr = new Array(1000000); arr[0] = Math.random(); var sum = 0; for (let i = 0; i < 1000000; i++) { sum+= arr[i]; }
Direct Array
let arr = []; arr[0] = Math.random(); var sum = 0; for (let i = 0; i < 1000000; i++) { sum+= arr[i]; }