Run results for: {} vs Map with set and CHECK value exists

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:151.0) Gecko/20100101 Firefox/151.0

Browser: Firefox 151

Operating system: Windows

Device Platform: Desktop

Date tested: one month ago

CHECK: Object

105K/s

CHECK: Map

10K/s

View exact numbers

Test name	Executions per second
✓ CHECK: Object	105,130 Ops/sec
CHECK: Map	10,495 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

const d1 = {};

for (let i = 0; i < 10000; i++) {
  	d1[i] = i;
}

const d2 = new Map();

for (let i = 0; i < 10000; i++) {
  	d2.set(i, i);
}

Tests:

CHECK: Object
let v1 = 0; for (let i1 = 0; i1 < 10000; i1++) { if (d1[i1] !== undefined) { v1++; } }
CHECK: Map
let v2 = 0; for (let i2 = 0; i2 < 10000; i2++) { if (d2.has(i2)) { v2++; } }