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
var ucLetters1 = "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
check1 = /[a-z]/;
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;
},
isUpper21: function (ch) {
return ucLetters1.indexOf(ch) != -1;
},
isUpper3: function(ch) {
return ch.toUpperCase() === ch;
},
isUpper4: function(ch) {
var check = /[a-z]/;
return check.test(ch);
},
isUpper41: function(ch) {
return check1.test(ch);
},
}
var c = "hello".charAt(0);
Ready to run.
Test | Ops/sec | |
---|---|---|
isUpper |
| ready |
isUpper2 |
| ready |
isUpper21 |
| ready |
isUpper3 |
| ready |
isUpper4 |
| ready |
isUpper41 |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.