Preparation code

<div id="mydiv">

</div>

 
<script>
  Benchmark.prototype.setup = function() {
    div = document.getElementById("mydiv")
  };
</script>

Preparation code output

Test runner

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div.innerHTML = "<div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div>"
var c;
while(c = div.lastChild) {
  div.removeChild(c)
}

div.innerHTML = "<div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div>"
var c;
while(c = div.firstChild) {
  div.removeChild(c)
}

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