Run results for: Array initialization: preallocate vs push

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 Edge/16.16299

Browser: Edge 16.16299

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Preallocate	16676.3 Ops/sec
Push	3090.1 Ops/sec

Tests:

Preallocate
var N = 10000; var result = new Array(N); for (var i = 0; i < N; i++) { result[i] = N; }
Push
var N = 10000; var result = []; for (var i = 0; i < N; i++) { result.push(N); }