jsPerf.app is an online JavaScript performance benchmark test runner & jsperf.com mirror. It is a complete rewrite in homage to the once excellent jsperf.com now with hopefully a more modern & maintainable codebase.
jsperf.com URLs are mirrored at the same path, e.g:
https://jsperf.com/negative-modulo/2
Can be accessed at:
https://jsperf.app/negative-modulo/2
Seeing whether string.includes
is signficantly less performant than slicing a known approximate position of the string then searching.
const cruft = "abcedfghi";
const needle = "needle";
const haystack = cruft+needle + cruft.repeat(1000);
Ready to run.
Test | Ops/sec | |
---|---|---|
String.includes |
| ready |
string.slice.includes |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.