Run results for: concat vs spread vs empty spread vs push (performance) - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.1 Safari/605.1.15

Browser: Safari 12

Operating system: Mac OS X 10.14.1

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
concat	13889480.0 Ops/sec
spread	55982260.0 Ops/sec
empty spread	25059620.0 Ops/sec
push	11245640.0 Ops/sec

Website performance monitoring

Tests:

concat
var params = ["hello", true, 7]; var other = params.concat([1]);
spread
var params = ["hello", true, 7] var other = [...params, 1]
empty spread
var other = [...[], 1]
push
var params = ["hello", true, 7]; params.push(1);