jQuery $.extend vs. JSON.parse

JavaScript performance comparison

Revision 2 of this test case created by

Preparation code

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

      
<script>
Benchmark.prototype.setup = function() {
  var parent = {
    one: 1,
    two: 2,
    arr: [1, 2],
    obj: { one: 1, two: 2 }
  }
  
  function copy(o) {
     var out = Array.isArray(o) ? [] : {};
     for (var key in o) {
         var v = o[key];
         out[key] = (typeof v === "object") ? copy(v) : v;
     }
     return out;
  }

};
</script>

Preparation code output

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
jQuery
var child = $.extend(true, {}, parent);
pending…
JSON.parse
var child = JSON.parse(JSON.stringify(parent));
pending…
copy
var child = copy(parent);
pending…

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Revisions

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