Run results for: Encode byte string test (string concatenation vs. map join)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser: Chrome 134

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

String concatenation (from Uint8Array)

621K/s

String concatenation (from Uint8Array converted to Array)

491K/s

Array map join

476K/s

View exact numbers

Test name	Executions per second
✓ String concatenation (from Uint8Array)	620,620 Ops/sec
String concatenation (from Uint8Array converted to Array)	491,062 Ops/sec
Array map join	475,546 Ops/sec

Script Preparation code:

var text = '鉴于对人类家庭所有成员的固有尊严及其平等的和不移的权利的承认，乃是世界自由、正义与和平的基础';
var uint8Array = new TextEncoder().encode(text);

Tests:

String concatenation (from Uint8Array)
let byteStr = ''; uint8Array.forEach(i => { byteStr += String.fromCharCode(i); });
Array map join
let byteStr = new Array(uint8Array).map(i => String.fromCharCode(i)).join('');
String concatenation (from Uint8Array converted to Array)
let byteStr = ''; new Array(uint8Array).forEach(i => { byteStr += String.fromCharCode(i); });