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<!DOCTYPE html><html><body>
<script>!function(){
Object.prototype.prop = true;
var array = [
 {},
 [],
 alert,
 document.createElement,
 setTimeout,
 setInterval,
 document.createElement('i'),
 document.createElement('i').appendChild,
 arguments
],obj,i=0;
while(obj=array[i++]){
  if(obj.prop)document.write('sucess - '+obj+'<br>');
  else document.write('fail - '+obj+'<br>');
}
}()</script>
Output 300px

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anonymouspro
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