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                            # redux設計的三大思想

## 1.store必須是唯一的

## 2.只有store能改變自己的內容

## 3.Reducer必須是純函數

> 所謂純函數就是輸入固定,輸出固定,且不會有副作用。

核心api

*   createStore創建一個store
*   store.dispatch派發action
*   store.getState()獲取store中數據的內容
*   store.subscribe()訂閱store的改變
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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