Run results for: Map get VS Map has get

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36 OPR/97.0.0.0 (Edition developer)

Browser: Opera 97

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Map 1	5384.8 Ops/sec
Map 2	5810.4 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