Extjs的静态成员

 1 Ext.define('Computer',{ 
 2            statics:{ 
 3                instanceCount:0, 
 4                factory:function(brand){ 
 5                // 'this' in static methods refer to the class itself 
 6                return new this({brand: brand}); } 
 7                },  
 8            config:{ brand:null },
 9            constructor:function(config){ 
10                this.initConfig(config);  
11                // the 'self' property of an instance refers to its class 
12                this.self.instanceCount++;  
13                 return this; 
14                } 
15 });

1 var dellComputer=Computer.factory('Dell'); 
2 var appleComputer=Computer.factory('Mac');  
3 alert(appleComputer.getBrand());// using the auto-generated getter to get the value of a config property. Alerts "Mac"  
4 alert(Computer.instanceCount);// Alerts "2"