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

String() (v2)

Revision 2 of this benchmark created on December 17, 2025

Test runner

Ready to run.

Testing in
Test		Ops/sec
String(2)	`var a = String(2)`	ready
'2'	`var a = '2'`	ready
2 + ''	`var a = 2 + ''`	ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

Revision 1: published on December 17, 2025
Revision 2: published on December 17, 2025
Revision 4: published on December 17, 2025
Revision 5: published on December 17, 2025
Revision 6: published on December 17, 2025
Revision 7: published on December 17, 2025
Revision 8: published on December 17, 2025
Revision 9: published on December 17, 2025