Browser Diet - Cache Array Length

JavaScript performance comparison

Test case created by Zeno Rocha

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Testing in unknown unknown
Test Ops/sec
Without cache
 
var arr = new Array(1000);

for (var i = 0; i < arr.length; i++) {
  // do something
}
 pending…
With cache
 
var arr = new Array(1000);

for (var i = 0, len = arr.length; i < len; i++) {
  // do something
}
 pending…

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