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
Comparing the performance of using the global isFinite(x) which implicitly casts to number vs Number.isFinite(Number(x)) with an explicit cast.
Ready to run.
| Test | Ops/sec | |
|---|---|---|
| isFinite(num) | | ready |
| Number.isFinite(num) | | ready |
| isFinite(str) | | ready |
| Number.isFinite(Number(str)) | | ready |
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