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 ident8 = function() {
var id = Math.floor(Math.random() * Math.pow(2, 32) + 1);
// Pad the front of the string with zeros so it is 8 hex digits long
var idstr = id.toString(16);
var zerostr = '00000000';
return (zerostr.substr(0, 8 - idstr.length) + idstr);
};
var ident = function() {
return ident8() + ident8();
};
var rounds = 1000000;
var idents = [];
var things = {};
for (var n = 0; n < rounds; n++) {
var id = ident();
idents.push(id);
things[id] = {'last_check': 0};
}
var obj = {};
var arr = [];
Ready to run.
Test | Ops/sec | |
---|---|---|
full obj set |
| ready |
full array push |
| ready |
50% duplication obj set |
| ready |
50% duplication array push |
| ready |
90% duplication obj set |
| ready |
90% duplication array push |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.