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<a href=//github.com/xem/miniJSperf><img style="position:absolute;top:0;right:0;border:0;" src="https://s3.amazonaws.com/github/ribbons/forkme_right_darkblue_121621.png" alt="Fork me on GitHub"></a>
<center style="font-family:arial">
<h1>MiniJSperf</h1>
<h3>A JSperf clone golfed by xem, p01, Subzey and Aemkei, in 250b</h3>
<br>
<pre style="background:#def;padding:10px;font:normal 14px/14px courier;width:650px;margin:0 auto">
<body onload='for(i in v="value")f.innerHTML+="<textarea id=_"+
i+">//"+["before",1,2,"after","result"][i]'id=f><button onclick
='for($=0;$<2;eval(Array(1e5).join(_0[v]+(n="\n")+($++?_2:_1)[v
]+n+_3[v]+n)),_4[v]+=n+$+":"+(new Date-_)+"ms")_=new Date'>Go
</pre>
<a href=golfed.html style="display:block;width:650px;text-align:right;padding:5px">Try / download</a>
<br>
<h3>Demo</h3>
<textarea rows=5 id=t4>// Setup
test = 1,2345678</textarea>
<textarea rows=5 id=t3>// Snippet #1
Math.floor(test)</textarea>
<textarea rows=5 id=t2>// Snippet #2
~~test</textarea>
<textarea rows=5 id=t1>// Teardown
delete test</textarea>
<br>
<br>
<textarea rows=5 id=t0>Results</textarea>
<br>
<br>
<button onclick=r() title="Run 100,000 times [setup + snippet + teardown]">Run</button>
<br>
<script>
r=function(){
t0.innerHTML="Results";
for($3=2;$3--;){
$4=t4.value+";\n"+top["t"+($3+2)].value+";\n"+t1.value;
$0=new Date;
for($1=1e5;$1--;){
eval($4);
}
t0.innerHTML+="\n#"+(2-$3)+":"+(new Date-$0)+"ms";
}
}
</script>
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PS: ~~ is faster than Math.floor