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
<script>
var test_str = " a aa b bbb b bb b",
flags = 'g',
pattern = "\\s+",
lit = /\s+/g,
cons = new RegExp(pattern,flags)
// !!! Previous revision called .compile without arguments, compiling new, EMPTY regexp.
// !!! That's why it had noticeable difference in speed. Same for cons_comp.
// Chrome does not return new reference from compile, so you need to assign regexp to variable before calling compile on it.
var lit_comp = (/\s+/g)
lit_comp.compile(pattern, flags)
var cons_comp=new RegExp(pattern,flags)
cons_comp.compile(pattern, flags)
</script>Ready to run.
| Test | Ops/sec | |
|---|---|---|
| literal | | ready |
| constructor | | ready |
| literal reference | | ready |
| constr. string ref | | ready |
| constr. pattern ref. | | ready |
| literal ref. w/compile | | ready |
| constr. ref. w/compile | | ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.