Run results for: Map get VS Map has get

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/120.0.6099.119 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 120

Operating system: iOS 17.1

Device Platform: Mobile

Date tested: 10 months ago

Test name	Executions per second
Map 1	5110.8 Ops/sec
Map 2	5421.3 Ops/sec

Script Preparation code:

var i = 0, count = 1000, a;
var map = new Map();

for (i = 0; i < count; i++) {
  if (Math.random() > 0.5) {
    map.set(i, i * i);
  }
}

Tests:

Map 1
for (i = 0; i < count; i++) { a = map.get(i); }
Map 2
for (i = 0; i < count; i++) { if (map.has(i)) { a = map.get(i); } }

Run results for: Map get VS Map has get

Map get VS Map has get

Map 1

Map 2