Run results for: String concatenation vs array join #2

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:153.0) Gecko/20100101 Firefox/153.0

Browser: Firefox 153

Operating system: Linux

Device Platform: Desktop

Date tested: 2 days ago

String concatentation

258K/s

Array join (w/ push)

108K/s

Array join

105K/s

View exact numbers

Tests:

String concatentation
let str = ""; for (let i = 0; i < 1000; i++) { str += "String concatenation. "; }
Array join
let arr = []; for (let i = 0; i < 1000; i++) { arr[i] = "String concatenation. "; } str = arr.join("");
Array join (w/ push)
let arr = []; for (let i = 0; i < 1000; i++) { arr.push("String concatenation. "); } str = arr.join("");