Run results for: Push vs Concat - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36

Browser: Chrome 55

Operating system: Mac OS X 10.12.1

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
Push 5	12614780.0 Ops/sec
Concat 5	6021421.0 Ops/sec
Push 50	450225.3 Ops/sec
Concat 50	1628093.0 Ops/sec
Push 500	56428.8 Ops/sec
Concat 500	528173.5 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))