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[TOC]

## 正確的姿勢

函數首字母必須為小寫！

![mark](http://qiniu.newthink.cc/blog/20171127-190122515.png)


坑爹，結果發現`首字母必須為小寫`!!

##  錯誤的姿勢
![mark](http://qiniu.newthink.cc/blog/20171127-185329942.png)

兩邊都為大寫，則不解析，報錯如下：

## 報錯的內容
![mark](http://qiniu.newthink.cc/blog/20171127-185419438.png)

## 解決方法
一開始我們都沒看清楚，這是什么原因，好好分析了一會兒！正確的姿勢是這樣子的：
```
首字母必須為小寫，
首字母必須為小寫，
首字母必須為小寫！
```

![mark](http://qiniu.newthink.cc/blog/20171127-185805500.png)


好好看上圖，上邊為大寫了，下邊就為小寫了，所以不認了


                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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