array join vs string connect

JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var str = "a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z";
    var arr = str.split(",");
};
</script>

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Testing in unknown unknown
Test Ops/sec
string connect
var output = "";
for (var i = 0, len = arr.length; i < len; i++) {
  output += arr[i];
}
pending…
array join
var output = arr.join("");
pending…

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