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                            # **微信小程序中的單位**
rpx是微信為小程序專門設計的一個尺寸單位。px和rpx的換算如下：
|  設備   |  rpx換算px(屏幕寬度/7550)   | px換算rpx(750/屏幕寬度) |
| --- | --- | --- |
|  iPhone5   |  1rpx = 0.42px  |  1px = 2.34rpx  |
|  iPhone6   |  1rpx = 0.5px  |  1px = 2rpx  |
|  iPhone6 Plus   |  1rpx = 0.552px  |  1px = 1.81rpx  |
我們一般設計規范都是依據iPhone6來設計的，也就是說平常ui設計師給出的1px我們在寫代碼時要寫0.5rpx。在開發小程序時建議用rpx作為小程序的尺寸單位，能很好的做到自適應，px的大小乘以2對應rpx即可。
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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