Deleting last chars of string

JavaScript performance comparison

Test case created by SiPlus

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var str = 'abcd';
};
</script>

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Testing in unknown unknown
Test Ops/sec
substring
str = str.substring(0, str.length - 2);
str += 'cd';
pending…
slice
str = str.slice(0, -2);
str += 'cd';
pending…
substr
str = str.substr(0, str.length - 2);
str += 'cd';
pending…

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