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

Run details:

User agent: Mozilla/5.0 (Android 15; Mobile; rv:139.0) Gecko/139.0 Firefox/139.0

Browser: Firefox Mobile 139

Operating system: Android

Device Platform: Mobile

Date tested: 10 months ago

Test name	Executions per second
Array find	0.7 Ops/sec
Array indexOf	3.7 Ops/sec
Map has	62.1 Ops/sec
Map get	54.6 Ops/sec
Set has	58.0 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++; } }