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
<script src="http://code.jquery.com/jquery-2.1.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.7.0/underscore-min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.min.js"></script>
<script>
var lodash = _.noConflict();
</script>
function clone(obj) {
var target = {};
for (var i in obj) {
if (obj.hasOwnProperty(i)) {
target[i] = obj[i];
}
}
return target;
}
function deepclone(src) {
function mixin(dest, source, copyFunc) {
var name, s, i, empty = {};
for(name in source){
// the (!(name in empty) || empty[name] !== s) condition avoids copying properties in "source"
// inherited from Object.prototype. For example, if dest has a custom toString() method,
// don't overwrite it with the toString() method that source inherited from Object.prototype
s = source[name];
if(!(name in dest) || (dest[name] !== s && (!(name in empty) || empty[name] !== s))){
dest[name] = copyFunc ? copyFunc(s) : s;
}
}
return dest;
}
if(!src || typeof src != "object" || Object.prototype.toString.call(src) === "[object Function]"){
// null, undefined, any non-object, or function
return src; // anything
}
if(src.nodeType && "cloneNode" in src){
// DOM Node
return src.cloneNode(true); // Node
}
if(src instanceof Date){
// Date
return new Date(src.getTime()); // Date
}
if(src instanceof RegExp){
// RegExp
return new RegExp(src); // RegExp
}
var r, i, l;
if(src instanceof Array){
// array
r = [];
for(i = 0, l = src.length; i < l; ++i){
if(i in src){
r.push(clone(src[i]));
}
}
// we don't clone functions for performance reasons
// }else if(d.isFunction(src)){
// // function
// r = function(){ return src.apply(this, arguments); };
}else{
// generic objects
r = src.constructor ? new src.constructor() : {};
}
return mixin(r, src, clone);
}
var deepObject = {
a: {
b: {
c: 6
},
d: 8
},
e: "hello",
p: 9,
q: 10,
r: true,
s: new Date(),
t: function () {
var foo = 'bar';
return foo;
},
v: [1, 2, 3],
__proto__: {
constructor: function(){},
__proto__: {}
}
};
Ready to run.
Test | Ops/sec | |
---|---|---|
jQuery Deep Clone |
| ready |
Underscore |
| ready |
Lo-dash |
| ready |
JSON |
| ready |
Lo-dash extend |
| ready |
clone |
| ready |
deep clone |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.