Run results for: IndexOf vs Includes str

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4427.5 Safari/537.36

Browser: Chrome 90

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
IndexOf	14635126.0 Ops/sec
Includes	8956839.0 Ops/sec

Script Preparation code:

var str = 'banana sausage mufasa';

AخA
 
var str = 'banana sausage mufasa';

Tests: