Array Performance

JavaScript performance comparison

Revision 251 of this test case created by

Preparation code

<script>
Benchmark.prototype.setup = function()
	{
		var list = [];
		
		var a1 = [];
		var a2 = [];
		var o = {};
		
		for(var i=0; i<1000; i++)
		{
			var item = Math.round(Math.random() * 10000000);
			list.push(item);
			a1.push({id:item, name:item});
			a2[item] = {id:item, name:item};
			o[item] = {id:item, name:item};
		}
		
		var id = list[Math.round(Math.random() * (list.length - 1))];
	};
</script>
    

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Manual Array Lookup
for (var i = 0; i < a1.length; i++) {
  if (a1[i].id = id) result = a1[i];
}
pending…
Holey Array by Index
var result = a2[id];
pending…
Object by Key
var result = o[id];
pending…

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Revisions

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