Join and split versus Array.push

Benchmark created on

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<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

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Join and split
var a = (new Array(1000)).join(" ").split(" ");
ready
Array.push
var a = [];
for (var i = 0; i < 1000; i++)
  a.push("");
ready

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