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 src="https://raw.github.com/documentcloud/underscore/master/underscore-min.js"></script>
var xValue,
yValue,
zValue,
undefined,
myundefinedvar,
mydefinedvar = 'test',
myemptyvar = '',
_ = window._,
i = 0;
window.xValue = xValue;
window.yValue = yValue;
window.zValue = zValue;
Ready to run.
Test | Ops/sec | |
---|---|---|
_.isUndefined() |
| ready |
Equals undefined |
| ready |
Typeof undefined |
| ready |
Void 0 |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.