Run results for: Array find VS Array indexOf VS Map has VS Map get VS Set has

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:135.0) Gecko/20100101 Firefox/135.0

Browser: Firefox 135

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Array find	1.7 Ops/sec
Array indexOf	6.2 Ops/sec
Map has	125.7 Ops/sec
Map get	122.2 Ops/sec
Set has	109.4 Ops/sec

Tests:

Array find
const positions = Array.from({ length: 10_000 }, () => [Math.random(), Math.random()]); const existing = []; let counter = 0; for (const p of positions) { existing.push([p[0], [1]]); } for (const p of positions) { const exists = existing.find((e) => e[0] === [0] && e[1] === p[1]); }
Array indexOf
const positions = Array.from({ length: 10_000 }, () => [Math.random(), Math.random()]); const existing = []; let counter = 0; for (const p of positions) { existing.push(`${p[0]}-${p[1]}`); } for (const p of positions) { const exists = existing.indexOf(`${p[0]}-${p[1]}`) > -1; if (exists) { counter++; } }
Map has
const positions = Array.from({ length: 10_000 }, () => [Math.random(), Math.random()]); const existing = new Map(); let counter = 0; for (const p of positions) { existing.set(`${p[0]}-${p[1]}`, true); } for (const p of positions) { const exists = existing.has(`${p[0]}-${p[1]}`); if (exists) { counter++; } }
Map get
const positions = Array.from({ length: 10_000 }, () => [Math.random(), Math.random()]); const existing = new Map(); let counter = 0; for (const p of positions) { existing.set(`${p[0]}-${p[1]}`, true); } for (const p of positions) { const exists = existing.get(`${p[0]}-${p[1]}`) === true; if (exists) { counter++; } }
Set has
const positions = Array.from({ length: 10_000 }, () => [Math.random(), Math.random()]); const existing = new Set(); let counter = 0; for (const p of positions) { existing.add(`${p[0]}-${p[1]}`, true); } for (const p of positions) { const exists = existing.has(`${p[0]}-${p[1]}`); if (exists) { counter++; } }