//共有var SunHang = function(){  var name = "ssss";   this.name = "hhhhh";   function getName(){}   this.getName = function(){     return this.name;    }}var aaa = new SunHang()aaa.getName()    //hhhhh//私有var SunHang = function(){  var name = "ssss";   this.name = "hhhhh";   function getName(){}   this.getName = function(){     return name;    }}var aaa = new SunHang()aaa.getName()    //ssss