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
How fast do checking types work?...
var str = "hello, world!";
var num = 503;
var obj = {hello: 'world'};
var arr = [obj, num, str];
function isStrT(str){
return typeof str === 'string';
}
function isStrC(str){
return str.constructor === String;
}
Ready to run.
Test | Ops/sec | |
---|---|---|
typeof |
| ready |
constructor |
| ready |
typeof FN |
| ready |
constructor FN |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.