Run results for: Map get VS Map has get

Run details:

User agent: Mozilla/5.0 (X11; CrOS x86_64 15183.78.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36

Browser: Chrome 108

Operating system: Chrome OS 15183.78.0

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Map 1	3229.8 Ops/sec
Map 2	3041.0 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: