Run results for: undefined vs typeof vs !!

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; ONEPLUS A5010) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.50 Mobile Safari/537.36

Browser: Chrome Mobile 95

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Script Preparation code:

var value;

Tests: