Run results for: For vs Foreach vs Do While vs While - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:122.0) Gecko/20100101 Firefox/122.0

Browser: Firefox 122

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 3 months ago

Test name	Executions per second
For	11232620.0 Ops/sec
Foreach	5853152.0 Ops/sec
Do While	9795317.0 Ops/sec
While	12204060.0 Ops/sec

Website performance monitoring

Script Preparation code:

var array = new Array(100);

Tests:

For
for (var i = 0; i < array.length; i++) { array[i]; }
Foreach
array.forEach(function(i) { array[i]; });
Do While
var i = 0; do { array[i]; i++; } while (i < 100);
While
var i = 0; while (i < 100) { array[i]; i++; }