Run results for: flatMap() vs filter().map() vs forEach()

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.16; rv:86.0) Gecko/20100101 Firefox/86.0

Browser: Firefox 86

Operating system: Mac OS X 10.16

Device Platform: Desktop

Date tested: 3 years ago

Script Preparation code:

var arr = [];
var i = 0;

while (i <= 1E5) arr[i] = i++;

Tests:

filter().map()
var results1 = [] arr.filter(x => x % 3).map(x => x/100)
flatMap()
var results2 = [] arr.flatMap(x => x % 3 ? x/100 : [])
forEach()
var results3 = [] arr.forEach(x => { if (x % 3) { results3.push(x / 100) } })