Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    function Panda(){}
    Panda.prototype.eats = "bamboo";
    Panda.prototype.climbs = "very small rocks";
    Panda.prototype.lives_in = "China";
    
    var p = new Panda(),
        o = {};
    
    for (var i = 0, len = 1000; i < len; i += 1) {
        o[i] = i * 2;
    }
  };
</script>

Test runner

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var keys = Object.keys(p),
    len = keys.length,
    i = -1,
    r = {};

while (len > (i += 1)) {
    var k = keys[i];
    r[k] = p[k];
}

return r;

 

var prop,
    r = {};

for (prop in p) {
    if (p.hasOwnProperty(prop)) {
        r[prop] = p[prop];
    }
}

return r;

var keys = Object.keys(o),
    len = keys.length,
    i = -1,
    r = {};

while (len > (i += 1)) {
    var key = keys[i];
    r[key] = o[key];
}

return r;

var prop,
    r = {};

for (prop in o) {
    if (o.hasOwnProperty(prop)) {
        r[prop] = o[prop];
    }
}

return r;

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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 John Cockrell on 20th January 2013
• Revision 2: published by Klimashkin on 3rd February 2013

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