Benchmark: Map has vs Object []

Script Preparation code:

var map = new Map();
var obj = {};

var i = 1e7;
while (i--) {
  map.set(i, i);
  obj[i] = i;
}

var noop = Function.prototype;

var s = 0;

Tests:

Map has
i = 1e7; s = 0; while (i--) { if (map.has(i)) s += 1; }
Object []
i = 1e7; s = 0; while (i--) { if (obj[i]) s += 1; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Map has
Object []

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 YaBrowser/24.1.0.0 Safari/537.36

Browser/OS: Yandex Browser 24 on Windows

View result in a separate tab

Test name	Executions per second
Map has	0.2 Ops/sec
Object []	0.3 Ops/sec

Related benchmarks:

Array.prototype.map vs Lodash map
Array from() vs Map.keys()
Array.from->map vs Array.prototype.map.call
Array.from().map vs Array.prototype.map.call
Map.prototype.forEach vs Array.prototype.forEach

Map has vs Object [] (version: 0)

Comparing performance of: Map has vs Object []

Created: 4 years ago by: Registered User

Jump to the latest result

Map has

Object []

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A