Run results for: index vs lastindexof

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.26 Safari/537.36 OPR/71.0.3770.0 (Edition developer)

Browser: Opera 71

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
lastIndexOf	19482954.0 Ops/sec
indexOf	1306242432.0 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");

Run results for: index vs lastindexof

lastIndexOf

indexOf