exec() vs match() vs test() vs search()

JavaScript performance comparison

Revision 2 of this test case created by shreyas patel

Info

Tests to determine which function is faster for detecting whether a string matches a regex pattern.

Preparation code

<script>
var regex = /regex/;
var str = 'This is a regex string.';
</script><script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script><script src="//ajax.googleapis.com/ajax/libs/prototype/1.6.1.0/prototype.js"></script><script src="//ajax.googleapis.com/ajax/libs/dojo/1.5/dojo/dojo.xd.js"></script><script src="//ajax.googleapis.com/ajax/libs/yui/2.8.1/build/yuiloader/yuiloader-min.js"></script><script src="//ajax.googleapis.com/ajax/libs/ext-core/3.1.0/ext-core.js"></script>

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Testing in unknown unknown
Test Ops/sec
exec()
if (regex.exec(str) !== null) {
 // String matches regex
}
pending…
match()
if (str.match(regex) !== null) {
 // String matches regex
}
pending…
test()
if (regex.test(str) !== false) {
 // String matches regex
}
pending…
search()
if (str.search(regex) !== -1) {
 // String matches regex
}
pending…

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Revisions

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