Run results for: Array initialization: preallocate a typed array vs vanilla preallocation

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:133.0) Gecko/20100101 Firefox/133.0

Browser: Firefox 133

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Preallocate typed

327K/s

Preallocate vanilla

53K/s

View exact numbers

Test name	Executions per second
✓ Preallocate typed	326,690 Ops/sec
Preallocate vanilla	52,909 Ops/sec

Tests:

Preallocate typed
var N = 10000; var result = new Uint8Array(N); for (var i = 0; i < N; i++) { result[i] = i; }
Preallocate vanilla
var N = 10000; var result = new Array(N); for (var i = 0; i < N; i++) { result[i] = i; }