Run results for: Array initialization: preallocate vs push (Objects)

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Preallocate

92/s

Push

54/s

View exact numbers

Test name	Executions per second
✓ Preallocate	92 Ops/sec
Push	54 Ops/sec

Tests:

Preallocate
var N = 1000000; var result = new Array(N); for (var i = 0; i < N; i++) { result[i] = { value: N }; }
Push
var N = 1000000; var result = []; for (var i = 0; i < N; i++) { result.push({ value: N }); }