Run results for: Map loop vs foreach

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36 OPR/67.0.3575.79

Browser: Opera 67

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Foreach	523.5 Ops/sec
Loop	543.2 Ops/sec

Script Preparation code:

   var myMap = new Map();
    for (let i = 0; i < 10000; i++) {
      myMap.set(i,i);
    }
  
    function someFn(i) {
      return i * 3 * 8;
    }

Tests:

Foreach
myMap.forEach(function (key, value){ someFn(value); })
Loop
for (let [key, value] of myMap) { someFn(value); }

Run results for: Map loop vs foreach

Foreach

Loop