Run results for: parse list of bytes

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:132.0) Gecko/20100101 Firefox/132.0

Browser: Firefox 132

Operating system: Ubuntu

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

byte array

68K/s

split

51K/s

json nonsense

48K/s

split no init size

48K/s

View exact numbers

Test name	Executions per second
✓ byte array	67,910 Ops/sec
split	50,670 Ops/sec
json nonsense	48,068 Ops/sec
split no init size	47,512 Ops/sec

Script Preparation code:

function makeString() {
  return Array.from(Array(1000))
    .map(() => (Math.random() * 256) | 0)
    .join(",");
}

var str = makeString();
window.output=null;

Tests:

split
const uintStrings = str.split(","); const len = uintStrings.length; const uintArray = new Array(len); for (let i = 0; i < len; ++i) { uintArray[i] = parseInt(uintStrings[i]); } window.output= uintArray;
split no init size
const uintStrings = str.split(","); const len = uintStrings.length; const uintArray = new Array(); for (let i = 0; i < len; ++i) { uintArray[i] = parseInt(uintStrings[i]); } window.output=uintArray;
byte array
const uintStrings = str.split(","); const len = uintStrings.length; const uintArray = new Uint8Array(len); for (let i = 0; i < len; ++i) { uintArray[i] = parseInt(uintStrings[i]); } window.output=uintArray;
json nonsense
window.output=JSON.parse(`[${str}]`);