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

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

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

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

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Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

• Revision 1: published on 3rd March 2011
• Revision 2: published by shreyas patel on 18th March 2011
• Revision 5: published by harth on 6th June 2011
• Revision 7: published on 5th September 2011
• Revision 9: published on 19th November 2012
• Revision 10: published on 27th November 2012
• Revision 11: published on 4th January 2013
• Revision 12: published by rx.test(str) vs str.search(rx) on 20th January 2013
• Revision 13: published by rx.test(str) vs str.search(rx) on 20th January 2013

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