Global Find and Replace

JavaScript performance comparison

Revision 4 of this test case created by bo33b

Info

Wow, the original testcase wasn't even using the RegEx variable! What an oversight!

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var str = "hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world hello world green cow world ",
        strtofind = "world",
        strtoreplace = "universe";
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
Regex
var regex = new RegExp(strtofind, "g");
str.replace(regex, strtoreplace);
pending…
Split / Join
str.split(strtofind).join(strtoreplace);
pending…
Simple String (not global!)
// from original regex testcase, for reference
str.replace(strtofind, strtoreplace);
pending…

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Revisions

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