Run results for: unshift01 - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.96 Safari/537.36

Browser: Chrome 88

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
[123].concat(a)	942580.9 Ops/sec
console.log(a.length)	16547.0 Ops/sec
unshift	39556.9 Ops/sec
console.log(a.length) - 2	16780.2 Ops/sec

Script Preparation code:

a = [1,2,3,4,5]

Tests:

[123].concat(a)
[123].concat(a)
console.log(a.length)
console.log(a.length)
unshift
a.unshift(123)
console.log(a.length) - 2
console.log(a.length)