RegExp test / search / match vs. indexOf

JavaScript performance comparison

Revision 72 of this test case created by

Preparation code

<script>
  var str = 'INLINE-block';
  var arr = ['inline', 'inline-block', 'inline-table', 'ruby'];
  var obj = {'inline': true, 'inline-block': true, 'inline-table': true, 'ruby': true};
</script>
      
<script>
Benchmark.prototype.setup = function() {
  var precompiledRegex = /(?:inline|ruby)/i;
  var newRegex = new Regex('/(?:inline|ruby)/', 'i')

};
</script>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
test
/(?:inline|ruby)/i.test(str);
pending…
search
str.search(/(?:inline|ruby)/i) > -1;
pending…
match
str.match(/(?:inline|ruby)/i).length > 0;
pending…
indexOf
str.indexOf(/(?:inline|ruby)/i) > -1;
pending…
precompiled test
precompiledRegex.test(str);
pending…
precompiled search
str.search(precompiledRegex) > -1;
pending…
precompiled match
str.match(precompiledRegex).length > 0;
pending…
precompiled indexOf
str.indexOf(precompiledRegex) > -1;
pending…
indexOf string primitive
var lowered = str.toLowerCase();
lowered.indexOf('inline') > -1 || lowered.indexOf('ruby') > -1;
pending…
Primitive comparison
var lowered = str.toLowerCase();
lowered === "inline" || lowered === "inline-block" || lowered === "inline-table" || lowered === "ruby";
pending…
Array.indexOf
arr.indexOf(str.toLowerCase()) > -1;
pending…
Object-based lookup
obj[str.toLowerCase()] === true;
pending…
new Regex
str.test(newRegex)
pending…

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Revisions

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