Benchmark: undefined vs. typeof vs. in vs. hasOwnProperty.call()

Script Preparation code:

var obj = { a: 1, b: 2, c: 3, d: 4, e: 5 };
var hasOwnProperty = Object.prototype.hasOwnProperty;

Tests:

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 6 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0 Safari/605.1.15

Browser/OS: Safari 12 on Mac OS X 10.13.6

undefined vs. typeof vs. in vs. hasOwnProperty.call() (version: 0)