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<!DOCTYPE html>
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<html>
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<head>
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    <title>Prototype Pattern Example</title>
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    <script type="text/javascript">
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        function Person(){
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        }
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        Person.prototype.name = "Nicholas";
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        Person.prototype.age = 29;
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        Person.prototype.job = "Software Engineer";
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        Person.prototype.sayName = function(){
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            alert(this.name);
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        };
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        var person1 = new Person();
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        person1.sayName();   //"Nicholas"
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        var person2 = new Person();
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        person2.sayName();   //"Nicholas"
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        alert(person1.sayName == person2.sayName);  //true
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        alert(Person.prototype.isPrototypeOf(person1));  //true
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        alert(Person.prototype.isPrototypeOf(person2));  //true
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        //only works if Object.getPrototypeOf() is available
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        if (Object.getPrototypeOf){
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            alert(Object.getPrototypeOf(person1) == Person.prototype);  //true
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            alert(Object.getPrototypeOf(person1).name);  //"Nicholas"
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        }
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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>