Run results for: Map vs forEach GOLGOTHA

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.92 Safari/537.36

Browser: Chrome 69

Operating system: Windows

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
Map	383501.6 Ops/sec
ForEach	342017.0 Ops/sec

Script Preparation code:

var array1 = ["a", "b", "c"];
var obj1 = {"aa": 1, "ab": 1, "ac": 1, "ba": 1, "bb": 1, "bc": 1};

Tests:

Map
var a = array1.map(key => obj1[`a${key}`]); var b = array1.map(key => obj1[`b${key}`]); var c = array1.map(key => { return !!obj1[`a${key}`] && !!obj1[`b${key}`] ? 1 : null });
ForEach
var a={}, b={}, c={}; array1.forEach(key => { a[key] = obj1[`a${key}`]; b[key] = obj1[`b${key}`]; c[key] = !!obj1[`a${key}`] && !!obj1[`b${key}`] ? 1 : null; });