String#concat vs += vs = string + otherstring

JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    string = "";
};
</script>

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Testing in unknown unknown
Test Ops/sec
String#concat
string = string.concat("Test");
pending…
+=
string += "Test"
pending…
= string + otherstring
string = string + "Test"
pending…

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