Run results for: index vs startsWith

Run details:

User agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:87.0) Gecko/20100101 Firefox/87.0

Browser: Firefox 87

Operating system: Fedora

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
lastIndexOf	18142520.0 Ops/sec
startsWith	29936970.0 Ops/sec

Tests:

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