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 makeid(length) {
let result = '';
const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
const charactersLength = characters.length;
let counter = 0;
while (counter < length) {
result += characters.charAt(Math.floor(Math.random() * charactersLength));
counter += 1;
}
return result;
}
function hashStringToNumber(str) {
let nr = 0;
const len = str.length;
for (let i = 0; i < len; i++) {
nr = nr + str.charCodeAt(i);
}
return nr;
}
function hashStringToNumberBinary(str) {
let nr = 0;
const len = str.length;
for (let i = 0; i < len; i++) {
nr = nr + str.charCodeAt(i);
nr |= 0; // Convert to 32bit integer, improves performance
}
return nr;
}
function onlySecond(str) {
let nr = 0;
const len = str.length;
for (let i = 0; i < len; i = i+2) {
nr = nr + str.charCodeAt(i);
}
return nr;
}
const strings = new Array(100000).map(() => makeId(10));
Ready to run.
Test | Ops/sec | |
---|---|---|
hashStringToNumber |
| ready |
hashStringToNumberBinary |
| ready |
onlySecond |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.