Run results for: Array concat vs spread operator vs push

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 11_0_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36 OPR/72.0.3815.465

Browser: Opera 72

Operating system: Mac OS X 11.0.0

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Array.prototype.concat	7235383.0 Ops/sec
spread operator	33537320.0 Ops/sec
Push	20207520.0 Ops/sec

Tests:

Array.prototype.concat
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].concat(params);
spread operator
var params = [ "hello", true, 7 ] var other = [ 1, 2, ...params ]
Push
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].push(...params);

Run results for: Array concat vs spread operator vs push

Compare the new ES6 spread operator with the traditional concat() method and push

Array.prototype.concat

spread operator

Push