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<!DOCTYPE html>
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<html>
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<head>
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    <title>Factory Pattern Example</title>
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    <script type="text/javascript">
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        function createPerson(name, age, job){
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            var o = new Object();
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            o.name = name;
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            o.age = age;
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            o.job = job;
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            o.sayName = function(){
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                alert(this.name);
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            };  
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            return o;
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        }
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        var person1 = createPerson("Nicholas", 29, "Software Engineer");
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        var person2 = createPerson("Greg", 27, "Doctor");
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        person1.sayName();   //"Nicholas"
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        person2.sayName();   //"Greg"
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    </script>
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</head>
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<body>
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​
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</body>
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</html>