array vs object iterate

JavaScript performance comparison

Revision 4 of this test case created

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Test Ops/sec
object
var a={"A1":1,"B1":2,"C1":3};

for (key in a) {
    var val = a[key];
}
pending…
array
var a={"A1":1,"B1":2,"C1":3};
var keys = Object.keys(a)
for (var i=keys.length; i--;) {
    var val = a[keys[i]];
}
pending…

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