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/123.0.0.0 Safari/537.36 Edg/123.0.0.0

Browser: Chrome 123

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

indexOf

101.3M/s

lastIndexOf

22.0M/s

View exact numbers

Test name	Executions per second
✓ indexOf	101,252,656 Ops/sec
lastIndexOf	22,020,800 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");