indexof vs regex

JavaScript performance comparison

Revision 2 of this test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var name = '3097252/120x600.swf',
        regex = /.*\/(.*)$/,
        filename;
};
</script>

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Testing in unknown unknown
Test Ops/sec
regex exec
var matches = regex.exec(name)
if (matches) {
  filename = matches[1];
}
pending…
substring w/ lastIndexOf
filename = name.substring(name.lastIndexOf('/'))
pending…
regex test
regex.test(name)
pending…
indexof
name.indexOf('x')
pending…

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