Run results for: startsWith vs indexOf vs endsWith

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:99.0) Gecko/20100101 Firefox/99.0

Browser: Firefox 99

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

Script Preparation code:

var start = 'hello!';
var end = 'string!';
var string = start + ' im a ' + end;

Tests: