1         function Person( uName ){
 2             this.skills = [ 'php', 'javascript' ];
 3             this.userName = uName;
 4         }
 5         Person.prototype.showUserName = function(){
 6             return this.userName;
 7         }
 8         function Teacher ( uName ){
 9             Person.call( this, uName );
10         }
11         Teacher.prototype = new Person();
12
13         var oT1 = new Teacher( 'ghostwu' );
14         oT1.skills.push( 'linux' );
15         var oT2 = new Teacher( 'ghostwu' );
16         console.log( oT2.skills ); //php,javascript
17         console.log( oT2.showUserName() ); //ghostwu

 1         function Person( uName ){
 2             this.skills = [ 'php', 'javascript' ];
 3             this.userName = uName;
 4         }
 5         Person.prototype.showUserName = function(){
 6             return this.userName;
 7         }
 8         function Teacher ( uName ){
 9             Person.call( this, uName );
10         }
11
12         function object( o ){
13             var G = function(){};
14             G.prototype = o;
15             return new G();
16         }
17
18         function inheritPrototype( subObj, superObj ){
19             var proObj = object( superObj.prototype ); //复制父类superObj的原型对象
20             proObj.constructor = subObj; //constructor指向子类构造函数
21             subObj.prototype = proObj; //再把这个对象给子类的原型对象
22         }
23
24         inheritPrototype( Teacher, Person );
25
26         var oT1 = new Teacher( 'ghostwu' );
27         oT1.skills.push( 'linux' );
28         var oT2 = new Teacher( 'ghostwu' );
29         console.log( oT2.skills ); //php,javascript
30         console.log( oT2.showUserName() ); //ghostwu