Info

Will objects instantiate faster if all properties are prototyped, even if the constructor must overwrite all properties?

Preparation code

<script>
  function NormalThing(name) {
    this.name = name;
  }

  function ProtoThing1(name) {
    this.name = name;
  }
  ProtoThing1.prototype.name = undefined;

  function ProtoThing2(name) {
    this.name = name;
  }
  ProtoThing2.prototype.name = "string"
</script>

Test runner

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var p = new NormalThing('Craig');

var p = new ProtoThing1('Craig');

var p = new ProtoThing2('Craig');

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