RegExp vs indexOf

JavaScript performance comparison

Revision 3 of this test case created by ConsciousCode

Info

Compare speed of Regex with indexOf for finding XML entities

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var isPresent=/&[#-\w];/g,
        url = "Lambda (&lambda;) is a Greek letter.";
};
</script>

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Testing in unknown unknown
Test Ops/sec
Regex
if ( -1 != url.search(isPresent) ) {
  // no op
}
pending…
indexOf
if ( -1 != url.indexOf('&') ) {
  // no op
}
pending…

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