Run results for: String concatenation vs array join Performance:3

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36

Browser: Chrome 80

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Tests:

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