Benchmark: string concat and array.join

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;

Rendered benchmark preparation results:

Previous results

Test case name	Result
join
concat

Latest run results:

Run details: (Test run date: one year ago)

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/OS: Chrome 126 on Windows

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

Related benchmarks:

string concat and array.join (version: 0)