Run results for: String concatenation vs array join aaaaa

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:131.0) Gecko/20100101 Firefox/131.0

Browser: Firefox 131

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Array join

49K/s

String concatentation

30K/s

View exact numbers

Test name	Executions per second
✓ Array join	49,101 Ops/sec
String concatentation	29,880 Ops/sec

Script Preparation code:

var str = "";
var i;
var sArr = new Array(1000);

Tests: