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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

Test case details

Title *

Description
(Markdown syntax is allowed)

Preparation Code

Preparation HTML
(this will be inserted in the <body> of a valid HTML5 document in standards mode)
(useful when testing DOM operations or including libraries)

<script>
var regex = /regex/;
var str = 'This is a regex string.';
</script>

Setup JS

Teardown JS

Test cases

Test #1

Title *

Async

Code *

if (regex.exec(str) !== null) {
 // String matches regex
}

Test #2

Title *

Async

Code *

if (str.match(regex) !== null) {
 // String matches regex
}

Test #3

Title *

Async

Code *

if (regex.test(str) !== false) {
 // String matches regex
}

Test #4

Title *

Async

Code *

if (str.search(regex) !== -1) {
 // String matches regex
}

Test #5

Title *

Async

Code *

if (str.indexOf(regex) !== -1) {
 // String matches regex
}