Run results for: [] + push vs new Array() + index insertion (random insertion order)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
[] + push	3334.0 Ops/sec
new Array() + index insertion	8032.2 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

const ITEMS_COUNT = 100000
const ITEMS_IN_RANDOM_ORDER = Array.from(Array(ITEMS_COUNT).keys())

Tests:

[] + push
const arr = []; for (const i of ITEMS_IN_RANDOM_ORDER) { arr.push(i); }
new Array() + index insertion
const arr = new Array(ITEMS_COUNT) for (const i of ITEMS_IN_RANDOM_ORDER) { arr[i] = i }