Benchmark: String concatenation vs array join Performance:3

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("");

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 4 years ago)

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/OS: Chrome 80 on Windows

String concatenation vs array join Performance:3 (version: 2)