Run results for: test substring vs slice vs substr

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.87 Safari/537.36

Browser: Chrome 78

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 4 years ago

Script Preparation code:

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

Tests: