Run results for: test substring vs slice vs substr

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36

Browser: Chrome 77

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Script Preparation code:

var example = '2019-10-22T15:41:42.739Z'

Tests: