Benchmark: Array .push() vs .unshift() + ref to last

Script Preparation code:

var arr = [], last = 0

Tests:

Rendered benchmark preparation results:

Previous results

Test case name	Result
.unshift()
.push()

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Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.87 Safari/537.36

Browser/OS: Chrome 80 on Windows

Test name	Executions per second
.unshift()	25940.2 Ops/sec
.push()	412210.3 Ops/sec

Array .push() vs .unshift() + ref to last (version: 0)