Benchmark: index === 0 vs lastindexof( ,0) === 0

Tests:

lastIndexOf
var str = "Hello world, welcome to the universe."; var n = str.lastIndexOf("Hello", 0) === 0;
indexOf
var str = "Hello world, welcome to the universe."; var n = str.indexOf("Hello") === 0;

Rendered benchmark preparation results:

Previous results

Test case name	Result
lastIndexOf
indexOf

ⓘ Get performance results from real users on your website with Request Metrics.

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Browser/OS: Chrome 100 on Mac OS X 10.15.7

Test name	Executions per second
lastIndexOf	46288080.0 Ops/sec
indexOf	925066900.0 Ops/sec

index === 0 vs lastindexof( ,0) === 0 (version: 0)