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

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:108.0) Gecko/20100101 Firefox/108.0

Browser: Firefox 108

Operating system: Ubuntu

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
String concatenation (from Uint8Array)	142168.3 Ops/sec
Array map join	178940.5 Ops/sec
String concatenation (from Uint8Array converted to Array)	174750.5 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); });