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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:61.0) Gecko/20100101 Firefox/61.0

Browser: Firefox 61

Operating system: Windows

Device Platform: Desktop

Date tested: 5 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: