Run results for: foreach vs map

Run details:

User agent: Mozilla/5.0 (Linux; Android 6.0.1; LEX720 Build/WAXCNFN5801709271S) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.158 Mobile Safari/537.36

Browser: Chrome Mobile 66

Operating system: Android 6.0.1

Device Platform: Mobile

Date tested: 6 years ago

Test name	Executions per second
foreach	4931.2 Ops/sec
map	2308.5 Ops/sec
for of transpiled	20345.2 Ops/sec
reduce	1660.0 Ops/sec
for of	3052.4 Ops/sec

Script Preparation code:

var values = new Array(10000);
for (var i = 0; i < values.length; i++) values[i]=i;

Tests:

foreach
var sum = 0; values.forEach(v => sum += v );
map
var sum = 0; values.map(v => sum += v );
for of transpiled
var sum = 0; for (var _i = 0, values_1 = values; _i < values_1.length; _i++) { var v = values_1[_i]; sum += v; }
reduce
var sum = values.reduce((s,v) => sum += v, 0);
for of
var sum = 0; for (var v of values) sum += v;

Run results for: foreach vs map

----

foreach

map

for of transpiled

reduce

for of