Run results for: setting array length + assignation vs assignation vs push

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36

Browser: Chrome 140

Operating system: Windows

Device Platform: Desktop

Date tested: 11 months ago

Benchmark engine: Benchmark.js

Set length and assignation

7K/s

Push

2K/s

Assignation

2K/s

View exact numbers

Tests:

Set length and assignation
var size = 100000; var arr2 = []; arr2.length = size; for (var i = 0; i < size; i++){ arr2[i] = i; }
Push
var size = 100000; var arr3 = []; for (var i = 0; i < size; i++){ arr3.push(i); }
Assignation
var size = 100000; var arr2 = []; for (var i = 0; i < size; i++){ arr2[i] = i; }