Run results for: js mapping: foreach vs for vs map

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:72.0) Gecko/20100101 Firefox/72.0

Browser: Firefox 72

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 4 years ago

Script Preparation code:

var arr = [];
for (var i = 0; i < 10000; i++) {
    arr[i] = Math.round(Math.random(0,9999));
}

var copy1 = [], copy2 =[], copy3 = [];

Tests: