Run results for: concat vs no concat

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36

Browser: Chrome 55

Operating system: Windows 8.1

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
concat	2758393.0 Ops/sec
no concat	8216690.0 Ops/sec

Tests:

concat
var a = [1,2,3]; var b = [4,5]; var c = [].concat.apply([],a,b);
no concat
var a = [1,2,3]; var b = [4,5]; var c = a; for (var i = 0; i < b.length; ++i) c.push(b[i]);