Run results for: string concat and array.join

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser: Chrome 126

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
join	1318814.4 Ops/sec
concat	3337260.8 Ops/sec

Script Preparation code:

  var characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

Tests:

join
let result = new Array(length); for (let i = 0; i < length; i++) { result[i] = characters.charAt(Math.floor(Math.random() * characters.length)); } return result.join("");
concat
let result = ""; for (let i = 0; i < length; i++) { result += characters.charAt(Math.floor(Math.random() * characters.length)); } return result;