objectkeysloopgood

JavaScript performance comparison

Revision 3 of this test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var obj = {};
    for (var i=0;i<10;i++) {
    obj[i] = 'asdf';
    }
};
</script>

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Testing in unknown unknown
Test Ops/sec
for-in
for (var key in obj) {
if (obj.hasOwnProperty(key)) {
};
};
pending…
key-consumption
var keys = Object.keys(obj), key;

while (key = keys.shift()) {
};
pending…
traditional for
var keys = Object.keys(obj);
var length = keys.length;

for (var i=0; i<length; i++) {
var key = keys[i];
}
pending…
keys-foreach
Object.keys(obj).forEach(function(){});
pending…

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