function calls: direct vs apply vs call vs bind

JavaScript performance comparison

Revision 10 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var f = function(){
    return this;
  };
  
  var that = {
    f: f
  };
  
  var bound = f.bind(that);
  
  var slice = Array.prototype.slice;
  Function.prototype.bind2 = function(_this) {
    var _self = this;
    var args = slice.call(arguments, 1);
    if (args.length === 0) {
      return function() {
        if (arguments.length === 0)
          return _self.call(_this);
        else if (arguments.length > 0)
          return _self.apply(_this, args);       
      }
    }
  
    return function() {
      if (arguments.length === 0)
         return _self.apply(_this, args);
  
      var a2 = args.contact(slice.call(arguments));
      return _self.apply(_this, a2);
    }
  }
  
  var bound2 = f.bind2(that);
  
  function f1() {
  }
  
  f1.prototype.test = function() {
  }
  
  function f2() {
      this.o = new f1();
  }
  
  f2.prototype.test = function() {
      this.o.test();
  }
  
  function f3() {
      this.o = new f2();
  }
  
  f3.prototype.test = function() {
      this.o.test();
  }
  
  var o1 = new f1();
  var o2 = new f2();
  var o3 = new f3();
  
  var bound3 = o1.test.bind(o1).bind(o2).bind(o3);
  
  var obj3 = new f3();
  
  var name = 'f';

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
direct
that.f();
pending…
apply
f.apply(that);
pending…
call
f.call(that);
pending…
bind
bound();
pending…
bind2
bound2();
pending…
by string
that['f']();
pending…
by string (indirect)
that[name]();
pending…
direct (local)
f();
pending…
bound3
bound3();
pending…
direct (long chain)
obj3.test();
pending…

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Revisions

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