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.
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https://jsperf.com/negative-modulo/2
Can be accessed at:
https://jsperf.app/negative-modulo/2
A simpler check for testing for concat vs join outside of a loop (not building a string in a loop, typical use case would be to use a var in the string).
<script>
var str = 'string';
var barr = ['this', ' is', ' a', str, ' to', ' test', ' if', ' there', ' is', ' any', ' difference', ' between', ' concat', ' and', ' join'];
var sarr = ['this', ' is', ' a', str];
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
concat |
| ready |
join |
| ready |
concat shorter |
| ready |
join shorter |
| ready |
concat in a loop |
| ready |
join on inline array |
| ready |
join on inline array shorter |
| ready |
join on a Array object |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.