Run results for: Array.prototype.concat vs spread operator vs apply

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 13_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/78.0.3904.84 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 78

Operating system: iOS 13.1

Device Platform: Mobile

Date tested: 5 years ago

Test name	Executions per second
Array.prototype.concat	14716948.0 Ops/sec
spread operator	9718708.0 Ops/sec
apply proto	5073099.0 Ops/sec
params.push	10258010.0 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 = params.push(...[1, 2]);
apply proto
var params = [ "hello", true, 7 ]; Array.prototype.push.apply(params, [1, 2]);
params.push
var params = [ "hello", true, 7 ]; var other = params.push.apply(params, [1, 2]);

Run results for: Array.prototype.concat vs spread operator vs apply

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

Array.prototype.concat

spread operator

apply proto

params.push