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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 11_2_2 like Mac OS X) AppleWebKit/604.1.34 (KHTML, like Gecko) CriOS/64.0.3282.112 Mobile/15C202 Safari/604.1

Browser: Chrome Mobile iOS 64

Operating system: iOS 11.2.2

Device Platform: iPhone

Date tested: 2024 years ago

Test name	Executions per second
Array.prototype.concat	14361990.0 Ops/sec
spread operator	41841420.0 Ops/sec
jQuery merge	4333898.0 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 ]
jQuery merge
var params = [ "hello", true, 7 ]; var other = $.merge([1, 2], params);

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

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

Array.prototype.concat

spread operator

jQuery merge