Debunk method calls in loop conditions

JavaScript performance comparison

Test case created by Raymond

Preparation code

Benchmark.prototype.setup = function() {
    var my_array = [0,1,2,3,4,5,6,7,8,9];
    function myMethod() {
        return my_array.length;

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Testing in unknown unknown
Test Ops/sec
for(var i = 0; i < my_array.length; i++){};
for(var i = 0; i < myMethod(); i++){};
var length = my_array.length;
for(var i = 0; i < length; i++){};
var length = myMethod();
for(var i = 0; i < length; i++){};

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