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
Testing speed of a standard for loop vs. Array.indexOf.
function createArray(length) {
var testData = [];
var countOfRandomElements = length - 2;
testData.push("_first_");
for(var i=0;i<countOfRandomElements;i++) {
testData.push("no"+i);
}
testData.push("_last_");
return testData;
}
var ar = createArray(100);
var arLarge = createArray(10000);
Ready to run.
Test | Ops/sec | |
---|---|---|
for loop |
| ready |
indexOf |
| ready |
for loop last |
| ready |
indexOf last |
| ready |
for loop (large) |
| ready |
indexOf (large) |
| ready |
for loop last (large) |
| ready |
indexOf last (large) |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.