prototype vs closures

JavaScript performance comparison

Revision 14 of this test case created by

Preparation code

<script>
  function Person(name) {
      this.name = name;
  }
  
  Person.prototype.get_name = function() {
      return this.name;
  };
  
  Person.prototype.set_name = function(name) {
      this.name = name;
  };
  
  var getter = function() {return this.name;}
  
  var setter = function(newName) {this.name = newName;}
  
  var person = function(name) {
          return {
              'name': name,
              'get_name': getter,
              'set_name': setter
          };
      };
  
  var personInline = function(name) {
      return {
          'get_name': function() {return name;},
          'set_name': function(newName){ name = newName; }
      };
  };
  
  var p1 = new Person('John');
  var p2 = person('John');
  var p3 = personInline('John');
  
  
  
  ui.benchmarks[2].setup = function() {
      var b = new Person('John');
  };
  
  ui.benchmarks[3].setup = function() {
      var c = person('John');
  };
  
  ui.benchmarks[4].setup = ui.benchmarks[2].setup;
  ui.benchmarks[5].setup = ui.benchmarks[3].setup;
  
  ui.benchmarks[7].setup = function() {
      var pi = personInline('John');
  };
  
  ui.benchmarks[8].setup = ui.benchmarks[7].setup;
</script>
    

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Prototype init
var c = new Person('John');
pending…
Closure init
var b = person('John');
pending…
Prototype read
c.get_name();
pending…
Closure read
b.get_name();
pending…
Prototype write
c.set_name('Jane');
pending…
Closure write
b.set_name('Jane');
pending…
Closure Inline init
var pi = personInline('John');
pending…
Closure Inline read
pi.get_name();
pending…
Closure Inline write
pi.set_name('Jane');
pending…

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Revisions

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