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/537.36 (KHTML, like Gecko) Chrome/73.0.3683.75 Safari/537.36

Browser: Chrome 73

Operating system: Mac OS X 10.14.1

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
concat	7064871.0 Ops/sec
spread	4894438.0 Ops/sec
empty spread	12498890.0 Ops/sec
push	31252940.0 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);