Run results for: index vs lastindexof

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser: Chrome 123

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

indexOf

157.8M/s

lastIndexOf

38.4M/s

View exact numbers

Test name	Executions per second
✓ indexOf	157,778,208 Ops/sec
lastIndexOf	38,356,504 Ops/sec

Tests:

lastIndexOf
var str = "Hello world, welcome to the universe."; var n = str.lastIndexOf("welcome");
indexOf
var str = "Hello world, welcome to the universe."; var n = str.indexOf("welcome");