charAt vs index

JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var str = "The quick brown fox jumps over the lazy dogs.";
    var len = str.length;
    var i = 0;
};
</script>

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Testing in unknown unknown
Test Ops/sec
charAt
for(; i < len; i++) str.charAt(i);
pending…
index
for(; i < len; i++) str[i];
pending…

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