Run results for: Array concat vs spread operator vs push (1) - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.79 Safari/537.36

Browser: Chrome 104

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Array.prototype.concat	1951877.4 Ops/sec
spread operator	3587199.0 Ops/sec
copy on push	3464736.5 Ops/sec
directly push	4035923.8 Ops/sec

Script Preparation code:

var existing = [ 1, 2, "hello", true, 7 ];
var newi = 1;

Tests:

Array.prototype.concat
var other = existing.concat([newi]);
spread operator
var other = [ ...existing, newi ];
copy on push
var other = existing.concat().push(newi);
directly push
existing.push(newi);

;