Run results for: Array extend - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.75 Safari/537.36 Edg/86.0.622.38

Browser: Chrome 86

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Push single	1077081.1 Ops/sec
Push spread	1198104.0 Ops/sec
Total spread	1182317.6 Ops/sec

Tests:

Push single
x = [1, 2, 3] y = [] x.forEach(e => y.push(e))
x

x = [1, 2, 3]
y = []

x.forEach(e => y.push(e))
Push spread
x = [1, 2, 3] y = [] y = y.push(...x)
x = [1, 2, 3]
y = []

y = y.push(...x)
Total spread
x = [1, 2, 3] y = [] y = [...y, ...x]
x = [1, 2, 3]
y = []

y = [...y, ...x]