Run results for: Array with and without predefined sizes

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:105.0) Gecko/20100101 Firefox/105.0

Browser: Firefox 105

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Tests:

Array predefined size
const arr = Array(10000); for (let i = 0; i < 10000; i++) { arr[i] = i * 2; }
Array no size
const arr = []; for (let i = 0; i < 10000; i++) { arr[i] = i * 2; }
array no size (push)
const arr = []; for (let i = 0; i < 10000; i++) { arr.push(i * 2); }
Array predefined size (large)
const arr = Array(1000000); for (let i = 0; i < 1000000; i++) { arr[i] = i * 2; }
Array no size (large)
const arr = []; for (let i = 0; i < 1000000; i++) { arr[i] = i * 2; }
Array predefined size (small)
const arr = Array(100); for (let i = 0; i < 100; i++) { arr[i] = i * 2; }
Array no size (small)
const arr = []; for (let i = 0; i < 100; i++) { arr[i] = i * 2; }