Fastest way to remove last character in JavaScript

JavaScript performance comparison

Test case created

Preparation code

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

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Testing in unknown unknown
Test Ops/sec
Substring
str = str.substr(0, str.length-1) 
pending…
Replace with regex
str = str.replace(/\.$/, '')
pending…
Slice
str = str.slice(0, -1)
pending…

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