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function User(properties)
{
for(var i in properties){(function(which){
var p=i;
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which["get"+p] = function(){
return properties[p];
};
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which["set"+p] = function(val){
properties[p] = val;
};
})(this);
}
}
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var user = new User({
name:"Bob";
age:44;
));
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alert(user.name == null);
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alert(user.getname() =="Bob");
//×îºó£¬ÎÒÃÇ¿´µ½Äܹ»Ê¹ÓÃÕâ¸öÐÄÉú³ÉµÄº¯ÊýÀ´ÉèÖûò»ñµÃÄêÁä
user.setage(22);
alert(user.getage()==22);
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