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## 1.13 虛擬屬性

虛擬屬性也是對象的屬性，是虛擬的，非模型對象的真實屬性，這樣的好處是當模板需要額外的用于顯示的屬性的時候但又不想更改模型，便可以采用這種辦法。如beetl內置的虛擬屬性 `.~size` 針對了數組以及集合類型。

```javascript
${user.gender}
${user.~genderShowName}
```

`~genderShowName` 是虛擬屬性，其內部實現根據boolean變量gender來顯示性別

如何完成虛擬屬性，請參考高級用法
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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