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
Get the size of an hash.
"use strict";
var keys = Object.keys
, getOwnPropertyNames = Object.getOwnPropertyNames
, defObj = {a:true, b:true, c:[1,2,3], spoke:{a:true}};
function oldWay(obj){
var a = [];
for(var prop in obj){
if (obj.hasOwnProperty(prop)) {
a.push(prop);
}}
return a;
}
Ready to run.
Test | Ops/sec | |
---|---|---|
Object.getOwnPropertyNames |
| ready |
Object.keys |
| ready |
for .. in |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.