RegExp test / search / match vs. indexOf (v78)

Revision 78 of this benchmark created on

Description

Testing for the existence of characters in a string using Regular Expressions test, search, and match compared to indexOf.

Preparation HTML

<script>
  var str = "But I must explain to you how all this mistaken idea of denouncing of a pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful. Nor again is there anyone who loves or pursues or desires to obtain pain of itself, because it is pain, but occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us ever undertakes laborious physical exercise, except to obtain some advantage from it? But who has any right to find fault with a man who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids a pain that produces no resultant pleasure";
  var match = 'again';
</script>

Setup

var precompiledRegex = /(again)/g;

Test runner

Ready to run.

Testing in
TestOps/sec
test
/(inline|ruby)/.test(str);
ready
search
str.search(/(inline|ruby)/) > -1;
ready
match
str.match(/(inline|ruby)/).length > 0;
ready
indexOf
str.indexOf(/(inline|ruby)/) > -1;
ready
precompiled test
precompiledRegex.test(str);
ready
precompiled search
str.search(precompiledRegex) > -1;
ready
precompiled match
str.match(precompiledRegex).length > 0;
ready
indexOf string primitive
str.indexOf(match) !== -1
ready
Primitive comparison
str === "inline" || str === "inline-block" || str === "inline-table" || str === "ruby";
ready
Substring
str.substring(0,match.length) === match
ready

Revisions

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