Run results for: Create Array of length 10, where each element is an empty array

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36

Browser: Chrome 106

Operating system: Mac OS X 10.14.3

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
1️⃣ Array.from()	551634.2 Ops/sec
2️⃣ Array() and map()	1577364.5 Ops/sec
3️⃣ for loop	11605397.0 Ops/sec
4️⃣ while loop	13395871.0 Ops/sec
5️⃣ do while loop	10653700.0 Ops/sec
6️⃣ for of loop	2590715.0 Ops/sec
7️⃣ ... spread operator, Array() and map()	2525533.5 Ops/sec
8️⃣ Array() and fill()	2613169.5 Ops/sec

Tests:

1️⃣ Array.from()
const arr = Array.from({ length: 10 }, () => []);
2️⃣ Array() and map()
const arr2 = Array(10) .fill() .map(() => []);
3️⃣ for loop
const arr3 = []; for (let i = 0; i < 10; i += 1) { arr3.push([]); }
4️⃣ while loop
const arr4 = []; let i = 0; while (i < 10) { arr4.push([]); i++; }
5️⃣ do while loop
const arr5 = []; let j = 0; do { arr5.push([]); j++; } while (j < 10);
6️⃣ for of loop
const arr6 = []; for (const _ of Array(10)) { arr6.push([]); }
7️⃣ ... spread operator, Array() and map()
const arr7 = [...Array(10)].map(() => []);
8️⃣ Array() and fill()
const arr8 = Array(10).fill([]);