Benchmark: Array.find vs. Map.get bis

Script Preparation code:

function getRandomElement(id) {
  return {
    id,
    a: Math.random(),
    b: Math.random(),
    c: Math.random(),
  }
}

function getArray(length) {
  const result = [];
  for (let i = 0; i < length; i++) {
    result.push(getRandomElement(i))
  }
  
  return result;
}

function arrayToMap(array) {
  return new Map(array.map(el => [el.id, el]));
}

function getRandomInt(max) {
  return Math.floor(Math.random() * max);
}

array_small = getArray(10000);
array_large = getArray(1000000);

map_small = arrayToMap(array_small);
map_large = arrayToMap(array_large);

Tests:

Array.find, 10 000 elements
const target = getRandomInt(9999); array_small.find(el => el.id === target);
Map.get, 10 000 elements
const target = getRandomInt(9999); map_small.get(target);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.find, 10 000 elements
Map.get, 10 000 elements

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 11 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36

Browser/OS: Chrome 139 on Mac OS X 10.15.7

View result in a separate tab

Map.get, 10 000 elements

168.2M/s

Array.find, 10 000 elements

240K/s

View exact numbers

Test name	Executions per second
✓ Map.get, 10 000 elements	168,205,360 Ops/sec
Array.find, 10 000 elements	239,745 Ops/sec

Array.find vs. Map.get bis (version: 1)

Test the performance of Array.find vs. Map.get, with various array sizes, and with/without conversion from array to map

Comparing performance of: `Array.find, 10 000 elements vs Map.get, 10 000 elements`

Created: 11 months ago by: Guest

Go to the latest result

Array.find, 10 000 elements

Map.get, 10 000 elements

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Array.find vs. Map.get bis (version: 1)

Test the performance of Array.find vs. Map.get, with various array sizes, and with/without conversion from array to map

Comparing performance of: Array.find, 10 000 elements vs Map.get, 10 000 elements

Created: 11 months ago by: Guest

Go to the latest result

Array.find, 10 000 elements

Map.get, 10 000 elements

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Array.find, 10 000 elements vs Map.get, 10 000 elements`