Run results for: Push vs Concat - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36

Browser: Chrome 66

Operating system: Mac OS X 10.11.6

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Push 1	23915030.0 Ops/sec
Concat 1	6381434.0 Ops/sec
Push 5	2942827.0 Ops/sec
Concat 5	2141919.0 Ops/sec
Push 10	2753212.0 Ops/sec
Concat 10	2085229.0 Ops/sec
Push 20	2429515.0 Ops/sec
Concat 20	1900925.0 Ops/sec

Website performance monitoring

Tests:

Push 1
var arr = [1, 2, 3, 4, 5]; arr.push.apply(arr, [6])
Concat 1
var arr = [1, 2, 3, 4, 5]; arr = arr.concat([6])
Push 5
var arr = [1, 2, 3, 4, 5]; arr.push.apply(arr, new Array(5).fill(0))
Concat 5
var arr = [1, 2, 3, 4, 5]; arr.concat(new Array(5).fill(0))
Push 10
var arr = [1, 2, 3, 4, 5]; arr.push.apply(arr, new Array(10).fill(0))
Concat 10
var arr = [1, 2, 3, 4, 5]; arr.concat(new Array(10).fill(0))
Push 20
var arr = [1, 2, 3, 4, 5]; arr.push.apply(arr, new Array(20).fill(0))
Concat 20
var arr = [1, 2, 3, 4, 5]; arr.concat(new Array(20).fill(0))