Run results for: Map get Vs Map has get - V2

Run details:

User agent: Mozilla/5.0 (X11; CrOS x86_64 14092.77.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.107 Safari/537.36

Browser: Chrome 93

Operating system: Chrome OS 14092.77.0

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Map 0.9 - get	1049.7 Ops/sec
Map 0.9 - has get	855.6 Ops/sec
Map 0.5 - get	1065.1 Ops/sec
Map 0.5 - has get	1087.2 Ops/sec
Map 0.1 - get	1079.1 Ops/sec
Map 0.1 - has get	1535.7 Ops/sec

Script Preparation code:

var i = 0, count = 1000, a;
var map09 = new Map();
var map05 = new Map();
var map01 = new Map();

for (i = 0; i < count; i++) {
  if (Math.random() < 0.9) {
    map09.set(i, i * i);
  }
  
  if (Math.random() < 0.5) {
    map05.set(i, i * i);
  }
  
  if (Math.random() < 0.1) {
    map01.set(i, i * i);
  }
}

Tests:

Map 0.9 - get
for (i = 0; i < count; i++) { a = map09.get(i); }
Map 0.9 - has get
for (i = 0; i < count; i++) { if (map09.has(i)) { a = map09.get(i); } }
Map 0.5 - get
for (i = 0; i < count; i++) { a = map05.get(i); }
Map 0.5 - has get
for (i = 0; i < count; i++) { if (map05.has(i)) { a = map05.get(i); } }
Map 0.1 - get
for (i = 0; i < count; i++) { a = map01.get(i); }
Map 0.1 - has get
for (i = 0; i < count; i++) { if (map01.has(i)) { a = map01.get(i); } }

Run results for: Map get Vs Map has get - V2

Map 0.9 - get

Map 0.9 - has get

Map 0.5 - get

Map 0.5 - has get

Map 0.1 - get

Map 0.1 - has get