replace() or substr()

JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var str = "a.aa.a.aa.";
    var regEx = /\.$/;
};
</script>

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Testing in unknown unknown
Test Ops/sec
substr
str = str.substr(0, str.length-1);
pending…
replace
str = str.replace(/\.$/, '');
pending…
precompiled replace
str = str.replace(regEx, '');
pending…

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