Benchmark: Array isArray vs 'in'

Script Preparation code:

var test = [1,2,3,4];
var c;

Tests:

Rendered benchmark preparation results:

Previous results

Test case name	Result
in
isArray

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Linux; Android 9; STF-L09) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.104 Mobile Safari/537.36

Browser/OS: Chrome Mobile 96 on Android

Test name	Executions per second
in	3910192.0 Ops/sec
isArray	348179.3 Ops/sec

Array isArray vs 'in' (version: 0)