Run results for: index vs lastindexof for Array

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

lastIndexOf

24.8M/s

indexOf

20.8M/s

View exact numbers

Test name	Executions per second
✓ lastIndexOf	24,849,016 Ops/sec
indexOf	20,801,142 Ops/sec

Tests:

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