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
Util = {
/**
* @return true if ch is a upper-case letter
*/
isUpper : function (ch) {
return ch >=65 && ch <= 90;
},
isUpper2: function (ch) {
var ucLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
return ucLetters.indexOf(ch) != -1;
}
}
var c = "hello".charAt(0)
Ready to run.
Test | Ops/sec | |
---|---|---|
Normal isUpper |
| ready |
Alternate isUpper2 |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.