Push vs Concat
Has Array.prototype.push more perf than Array.prototype.concat?
Date tested:
7 years ago
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2860.0 Safari/537.36
Test name
Executions per second
Push
440.0 Ops/sec
Concat
7.9 Ops/sec
Benchmark definition (click to collapse):
Script Preparation code:
var ar = []; var ar2 = []; for (var i = 0; i < 10 * 1000; i++) { ar[i] = i; ar2[i] = i; }
Tests:
Push
for (var i = 0, len = ar2.length; i < len; i++) { ar.push(ar2[i]); }
Concat
ar = ar.concat(ar2);
Open this result on MeasureThat.net