Run results for: for 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

Test name	Executions per second
lastIndexOf	47626756.0 Ops/sec
indexOf	981397.1 Ops/sec

Tests:

lastIndexOf
var str = "Hello world, welcome to the universe."; var n = str.lastIndexOf("o");
indexOf
var str = "Hello world, welcome to the universe."; var n = lastIndexOf(str, 'o') function lastIndexOf(str, sbj){ for(let i=str.length; i !== 0; i-- ) { if(str[n] === sbj){ return i } }}