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var myObj={name:’sam’,age:28}
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this.name=name;
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}
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alert(bob.age);   //Êä³ö½á¹ûΪ30
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function Person(name,age){
this.name=name;
this.age=age;
this.introduceSelf=function(){
alert('I am '+name+' , I am '+age +' years old.');
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}
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