Run results for: Array.prototype.concat vs spread operator (for one element) - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36

Browser: Chrome 77

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Array.prototype.concat	3618870.0 Ops/sec
spread operator	21818000.0 Ops/sec
Array.prototype.push	30071930.0 Ops/sec

Website performance monitoring

Tests:

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