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="//cdnjs.cloudflare.com/ajax/libs/angular.js/1.1.5/angular.min.js">
</script>
<script src="//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.4.4/underscore-min.js">
</script>
var a = {
a: 1,
b: 2,
c: 3
};
var b = {
d: 4,
e: 5,
f: 6
};
function cloneMerge(/* object arguments */) {
var params = {}, i, numArgs, j, numKeys, obj, keys, key;
for (i = 0, numArgs = arguments.length; i < numArgs; i++) {
obj = arguments[i];
keys = Object.keys(obj);
for (j = 0, numKeys = keys.length; j < numKeys; j++) {
key = keys[j];
params[key] = obj[key];
}
}
return params;
};
function cloneMerge2(/* object arguments */) {
var params = {}, i, numArgs, obj;
for (i = 0, numArgs = arguments.length; i < numArgs; i++) {
obj = arguments[i];
Object.keys(obj).forEach(function (key) {
params[key] = obj[key];
});
}
return params;
};
function cloneMerge3(/* object arguments */) {
var params = {};
for (i = 0, numArgs = arguments.length; i < numArgs; i++) {
var obj = arguments[i];
var keys = Object.keys(obj);
for (j = 0, numKeys = keys.length; j < numKeys; j++) {
var key = keys[j];
params[key] = obj[key];
}
}
return params;
};
Ready to run.
Test | Ops/sec | |
---|---|---|
angular.extend() |
| ready |
underscore.extend() |
| ready |
raw loops |
| ready |
raw loops 2 |
| ready |
raw loops 3 |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.