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    var variant = function (options){
      options = options || {};
      var initialize = options.initialize || function(){};
      var klass = initialize ;
      klass.constructor = arguments.callee;
      klass.prototype.constructor = klass;
      klass.toString = function(){//½ûÖ¹²é¿´¹¹Ôì·½·¨
        return "function variant(){\n    [variant code]\n}"
      }
      return klass;
    };
    var Person = variant({initialize:function(age){
        this.age = age;
      }});
    alert(Person)//¿´²»µ½¹¹Ôì·½·¨µÄʵÏÖ
    var p = new Person(3);
    alert(p)
    alert(p.age);
    alert(p.constructor);//¿´²»µ½¹¹Ôì·½·¨µÄʵÏÖ
    var P = variant({})
    var a = new P;
    alert(a);
 
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    var variant = function (options){
      options = options || {};
      var initialize = options.initialize || function(){};
      var klass = initialize ;
      klass.constructor = arguments.callee;
      klass.prototype.constructor = klass;
      klass.toString = fu


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{
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{
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