Info

In FF3.6/Win, the execution part (the function calls) have nearly identical running times, so I included the function declarations themselves in the test cases.

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script src="//base2.googlecode.com/svn/version/1.0.2/src/base2.js"></script>
<script>
extend = function(first, second){
    for (var prop in second){
        first[prop] = second[prop];
    }
};  
</script>

Preparation code output

Test runner

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Java applet disabled.

function aFoo() {
 var x;
 for (i = 0; i < 10; i++) {
  x = Math.random();
 }
}
aFoo();

var aBar = function() {
 var x;
 for (i = 0; i < 10; i++) {
  x = Math.random();
 }
};
aBar();

$.extend({
 aBaz: function() {
  var x;
  for (i = 0; i < 10; i++) {
   x = Math.random();
  }
 }
});
$.aBaz();

Object.prototype.aQuux = function() {
 var x;
 for (i = 0; i < 10; i++) {
  x = Math.random();
 }
};
var obj = {};
obj.aQuux();

var x;
for (i = 0; i < 10; i++) {
 x = Math.random();
}

var obj = {};
extend(obj, {
 aBaz: function() {
  var x;
  for (i = 0; i < 10; i++) {
   x = Math.random();
  }
 }
});
obj.aBaz();

base2.extend({
 aBaz: function() {
  var x;
  for (i = 0; i < 10; i++) {
   x = Math.random();
  }
 }
});
base2.aBaz();

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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 Jens Roland on 13th December 2010
• Revision 3: published by Andrew Petersen on 24th February 2011
• Revision 4: published on 16th March 2011
• Revision 5: published on 30th May 2011
• Revision 7: published by emi on 17th November 2011
• Revision 8: published on 27th December 2012
• Revision 9: published on 19th February 2013

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