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

字符串操作-字符串替换

Benchmark created on

Setup

const str = 'hello world';

Test runner

Ready to run.

Testing in
Test		Ops/sec
正则替换	`const newStr = str.replace(/world/, 'javascript');`	ready
字符串替换	`const newStr = str.replace('world', 'javascript');`	ready

Revisions

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

Revision 1: published on