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/**
* PersonÀࣺ¶¨ÒåÒ»¸öÈË£¬ÓиöÊôÐÔname£¬ºÍÒ»¸ögetName·½·¨
*/
function Person(){}
Person.prototype.name = "jack";
Person.prototype.getName = function() { return this.name;}
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var p1 = new Person();
var p2 = new Person();
console.log(p1.getName());//jack
console.log(p2.getName());//jack
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