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

```
<link href="//cdn.rawgit.com/Khan/KaTeX/v0.5.1/dist/katex.min.css" rel="stylesheet" type="text/css">
<script src="//cdn.rawgit.com/Khan/KaTeX/v0.5.1/dist/katex.min.js"></script>
<script src="https://cdn.mathjax.org/mathjax/2.5-latest/MathJax.js?delayStartupUntil=configured"></script>
<script>
MathJax.Hub.Config({
jax: ["input/TeX", "output/HTML-CSS"],
extensions: [],
TeX: {
extensions: ["AMSmath.js", "AMSsymbols.js", "noErrors.js", "noUndefined.js"]
},
"HTML-CSS": {
showMathMenu: false,
},
messageStyle: "none"
});
MathJax.Hub.Configured();
</script>
<div id="math"></div>
```

```
var math = document.getElementById("math");
var formula = "\\dfrac{-b \\pm \\sqrt{b^2 - 4ac}}{2a}";
```

```
math.innerHTML = "";
```

Ready to run.

Test | Ops/sec | |
---|---|---|

KaTeX |
| ready |

MathJax |
| ready |

You can edit these tests or add more tests to this page by appending /edit to the URL.

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