Run results for: index vs lastindexof

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; Mi A2 Lite Build/QKQ1.191002.002) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.110 Mobile Safari/537.36 OPT/2.7

Browser: Chrome Mobile 86

Operating system: Android

Device Platform: Mobile

Date tested: 4 years ago

Test name	Executions per second
lastIndexOf	2561551.5 Ops/sec
indexOf	188231392.0 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