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
just some fix on memo2
<script>
//memo1
//underscore.js implem
function memoize1(func, hasher) {
var memo = {};
hasher || (hasher = function(value){
return value; //^this could be done better..surely..
});
return function() {
var key = hasher.apply(this, arguments);
return hasOwnProperty.call(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
};
};
//memoize.js - by @addyosmani, @philogb, @mathias
// with a few useful tweaks from @DmitryBaranovsk
function memoize2( fn ) {
return function () {
var args = Array.prototype.slice.call(arguments),
hash = "",
i = args.length,
currentArg = null;
while(i--){
currentArg = args[i];
hash += (currentArg === Object(currentArg)) ?
JSON.stringify(currentArg) : currentArg;
}
fn.memoize || (fn.memoize = {});
return (hash in fn.memoize) ? fn.memoize[hash] :
fn.memoize[hash] = fn.apply( this , args );
};
}
//memo4 - by stevenlevithan
function memoize4(functor, expiration) {
var memo = {};
return function () {
var key = Array.prototype.join.call(arguments, "§");
if (key in memo)
return memo[key];
if (expiration)
setTimeout(function () {delete memo[key];}, expiration);
return memo[key] = functor.apply(this, arguments);
};
}
//@abozhilov
//Based on the @stevenlevithan memoize4 version
function memoize8(fn) {
var memo = {};
return function () {
var key = [].join.call(arguments, '§') + '§';
return (key in memo) ? memo[key] : memo[key] = fn.apply(this, arguments);
};
}
var fib, fiborg;
fiborg = fib = function (x) {
if(x < 2) return 1; else return fib(x-1) + fib(x-2);
}
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
Memo 8 |
| ready |
Memo 2 - addy, phil, mathias, dmitry, jbdemonte |
| ready |
Memo 4 - stevenlevithan |
| ready |
abozhilov's mod of memoize 4 |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.