Run results for: Map get VS Map has get 20122

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 5 months ago

Test name	Executions per second
Map 1	5338.0 Ops/sec
Map 2	8771.2 Ops/sec

Script Preparation code:

var i = 0, count = 1000, a;
var map = new Map();

for (i = 0; i < count; i++) {
  if (Math.random() > 0.99) {
    map.set(i, i * i);
  }
}

​x
 
var i = 0, count = 1000, a;var map = new Map();​for (i = 0; i < count; i++) {  if (Math.random() > 0.99) {    map.set(i, i * i);  }}​​

Tests:

for (i = 0; i < count; i++) {
  a = map.get(i);
}

 
for (i = 0; i < count; i++) {  a = map.get(i);}

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

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