$.data

JavaScript performance comparison

Test case created by

Preparation code

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

    

Preparation code output

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
jQuery 1
var owner = {};
owner[$.expando] = 123;
pending…
jQuery 2
var owner = {};
var descriptor = {};
try {
  descriptor[$.expando] = {value: 123};
  Object.defineProperties(owner, descriptor);
}
catch (e) {
  descriptor[$.expando] = 123;
  $.extend(owner, descriptor);
}
pending…
jQuery 2 simplified
var owner = {};
try {
  Object.defineProperty(owner, $.expando, {value: 123});
}
catch (e) {
  owner[$.expando] = 123;
}
pending…

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