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Run results for:
Array initialization: preallocate vs push
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Run details:
User agent:
Mozilla/5.0 (Android 14; Mobile; rv:122.0) Gecko/122.0 Firefox/122.0
Browser:
Firefox Mobile 122
Operating system:
Android
Device Platform:
Mobile
Date tested:
2 years ago
Test name
Executions per second
Preallocate
11878.9 Ops/sec
Push
13033.1 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); }