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
function checkNested(obj /*, level1, level2, ... levelN*/ ) {
var args = Array.prototype.slice.call(arguments),
obj = args.shift();
for (var i = 0; i < args.length; i++) {
if (!obj.hasOwnProperty(args[i])) {
return false;
}
obj = obj[args[i]];
}
return true;
}
function checkNestedFast(obj /*, level1, level2, ... levelN*/ ) {
for (var i = 1; i < arguments.length; i++) {
if (!obj.hasOwnProperty(arguments[i])) {
return false;
}
obj = obj[arguments[i]];
}
return true;
}
function checkNestedCatch(obj /*, level1, level2, ... levelN*/ ) {
try {
return obj[level1][level2][level3] !== "undefined";
} catch() {}
return false;
}
var test = {
level1: {
level2: {
level3: 'level3'
}
}
};
Ready to run.
Test | Ops/sec | |
---|---|---|
original |
| ready |
fast |
| ready |
try-catch |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.