Info

how much does scope lookup cost? and what about closure creation? This one is only about lookup

Preparation code

<script>
  var random = Math.random;
  var t1 = function() {
   return random();
  };
  var t2 = (function() {
   return function() {
    return random();
   };
  }());
  var t5 = (function() {
   return (function() {
    return (function() {
     return (function() {
      return function() {
       return random();
      };
     }());
    }());
   }());
  }());
  
  var t10 = (function() {
   return (function() {
    return (function() {
     return (function() {
      return (function() {
       return (function() {
        return (function() {
         return (function() {
          return (function() {
           return function() {
            return random();
           };
          }());
         }());
        }());
       }());
      }());
     }());
    }());
   }());
  }());
</script>

Test runner

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var f = t1();

var f = t2();

var f = t5();

var f = t10();

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Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

• Revision 1: published by WebReflection on 24th May 2011
• Revision 2: published on 24th May 2011
• Revision 3: published by Kyle Simpson on 24th May 2011
• Revision 4: published by WebReflection on 24th May 2011
• Revision 5: published by Mariusz Nowak on 25th May 2011

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