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Run results for:
Array initialization: preallocate vs push with objects (200k)
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Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36 Edg/144.0.0.0
Browser:
Chrome 144
Operating system:
Linux
Device Platform:
Desktop
Date tested:
2 months ago
Test name
Executions per second
Preallocate
671.7 Ops/sec
Push
589.3 Ops/sec
Tests:
Preallocate
var N = 200000; var result = new Array(N); for (var i = 0; i < N; i++) { result[i] = {n: N}; }
Push
var N = 200000; var result = []; for (var i = 0; i < N; i++) { result.push({n: N}); }