Run results for: array vs float64 for io and slice

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 i/o

119K/s

typedArray slice

42K/s

array slice

34K/s

typedArray i/o

11K/s

View exact numbers

Test name	Executions per second
✓ array i/o	119,236 Ops/sec
typedArray slice	42,053 Ops/sec
array slice	34,234 Ops/sec
typedArray i/o	10,578 Ops/sec

Script Preparation code:

function getRandomInt(max) {
  return Math.floor(Math.random() * Math.floor(max));
}
var a = [...Array(10000)].map(_ => Math.random(1000000));
var ta = (new Float64Array(10000)).map(_ => Math.random(1000000));

Tests:

array slice
a.slice(0);
typedArray slice
ta.slice(0);
array i/o
for (let i = 0; i < 10000; ++i) { a[i] = a[i] + 1; }
typedArray i/o
for (let i = 0; i < 10000; ++i) { ta[i] = ta[i] + 1; } let tb = Array.from(ta);