array vs property notation

JavaScript performance comparison

Test case created

Preparation code

Benchmark.prototype.setup = function() {
    var foo = function(){},
        _p = "prototype",
        _c = "constructor";
    foo.prototype = {};
    foo.prototype.constructor = foo; = "baz";

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Testing in unknown unknown
Test Ops/sec
dot notation
var test =;
array notation
var test = foo[_p][_c].bar;

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