Benchmark: Array.find vs Map.get

Array.find vs Map.get (version: 0)

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, 100 elements vs Map.get, 100 elements vs Array.find, 1000 elements vs Map.get, 1000 elements vs Array.find, 10 000 elements vs Map.get, 10 000 elements

Created: 4 days ago by: Registered User

Jump to the latest result

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(100);
array_medium = getArray(1000);
array_large = getArray(10000);

map_small = arrayToMap(array_small);
map_medium = arrayToMap(array_medium);
map_large = arrayToMap(array_large);

Tests:

Array.find, 100 elements
const target = getRandomInt(9999); array_small.find(el => el.id === target);
Map.get, 100 elements
const target = getRandomInt(9999); map_small.get(target);
Array.find, 1000 elements
const target = getRandomInt(999999); array_medium.find(el => el.id === target);
Map.get, 1000 elements
const target = getRandomInt(999999); map_medium.get(target)
Array.find, 10 000 elements
const target = getRandomInt(999999); array_large.find(el => el.id === target);
Map.get, 10 000 elements
const target = getRandomInt(999999); map_large.get(target)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.find, 100 elements
Map.get, 100 elements
Array.find, 1000 elements
Map.get, 1000 elements
Array.find, 10 000 elements
Map.get, 10 000 elements

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 4 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser/OS: Chrome 129 on Windows

View result in a separate tab

Test name	Executions per second
Array.find, 100 elements	1228066.0 Ops/sec
Map.get, 100 elements	2347436.0 Ops/sec
Array.find, 1000 elements	609478.5 Ops/sec
Map.get, 1000 elements	2832193.0 Ops/sec
Array.find, 10 000 elements	24083.0 Ops/sec
Map.get, 10 000 elements	2908133.0 Ops/sec

Array.find vs Map.get (version: 0)

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, 100 elements vs Map.get, 100 elements vs Array.find, 1000 elements vs Map.get, 1000 elements vs Array.find, 10 000 elements vs Map.get, 10 000 elements

Created: 4 days ago by: Registered User

Jump to the latest result

Array.find, 100 elements

Map.get, 100 elements

Array.find, 1000 elements

Map.get, 1000 elements

Array.find, 10 000 elements

Map.get, 10 000 elements

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A