Run results for: JS string includes vs indexOf

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0

Browser: Firefox 123

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

String.prototype.indexOf

2287.4M/s

String.prototype.includes

2268.8M/s

View exact numbers

Test name	Executions per second
✓ String.prototype.indexOf	2,287,413,504 Ops/sec
String.prototype.includes	2,268,844,032 Ops/sec

Script Preparation code:

var str = '';
var i = 0;

while (i <= 1E5) str += i++;
str += 'end';

Tests: