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 equals vs startsWith

Benchmark created on March 29, 2023

Test runner

Ready to run.

Test Ops/sec

equals

Testing in
Test	Ops/sec
equals	`if ('kuserwidgetmodulekuserwidgetmodulekuserwidgetmodule.' === 'kuserwidgetmodulekuserwidgetmodulekuserwidgetmodule' + '.') { }`	ready
startsWith	`if ('kuserwidgetmodulekuserwidgetmodulekuserwidgetmodule.'.startsWith('kuserwidgetmodulekuserwidgetmodulekuserwidgetmodule.')) { }`	ready

if ('kuserwidgetmodulekuserwidgetmodulekuserwidgetmodule.' === 'kuserwidgetmodulekuserwidgetmodulekuserwidgetmodule' + '.') {
	
}

ready

startsWith

if ('kuserwidgetmodulekuserwidgetmodulekuserwidgetmodule.'.startsWith('kuserwidgetmodulekuserwidgetmodulekuserwidgetmodule.')) {
	
}

ready

Revisions

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

Revision 1: published on March 29, 2023