string connection

JavaScript performance comparison

Test case created by Johnson Jiang

Preparation code

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

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Testing in unknown unknown
Test Ops/sec
str+=" world"
str += " world";
pending…
str=str+" world";
str = str + " world";
pending…
concat
str = str.concat(" world");
pending…

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