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
Casting string to integer, for example after reading from localStorage.
var strings = [];
var numbers = [];
for (var i = 0; i < 10000; ++i) {
strings.push("" + i);
numbers.push(0);
}
strings.push("");
numbers.push(0);
strings.push("abc");
numbers.push(0);
Ready to run.
Test | Ops/sec | |
---|---|---|
parseInt with base |
| ready |
+ |
| ready |
~~ |
| ready |
| 0 |
| ready |
>> 0 |
| ready |
>>> 0 |
| ready |
Number() |
| ready |
* 1 |
| ready |
Math.floor() |
| ready |
- 0 |
| ready |
~ |
| ready |
parseInt no base |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.