Run results for: Direct Array vs Typed Array vs Array

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:138.0) Gecko/20100101 Firefox/138.0

Browser: Firefox 138

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

new TypedArray

388/s

Direct Array

295/s

new Array

278/s

View exact numbers

Tests:

new TypedArray
let arr = new Float32Array(1000000); arr[0] = Math.random(); for (let i = 0; i < 1000000; i++) { arr[i] = arr[i - 1]; }
new Array
let arr = new Array(1000000); arr[0] = Math.random(); for (let i = 0; i < 1000000; i++) { arr[i] = arr[i - 1]; }
Direct Array
let arr = []; arr[0] = Math.random(); for (let i = 0; i < 1000000; i++) { arr[i] = arr[i - 1]; }