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                            ## new操作符具體干了什么呢?
1、創建一個空對象，并且 this 變量引用該對象，同時還繼承了該函數的原型。

2、屬性和方法被加入到 this 引用的對象中。

3、新創建的對象由 this 所引用，并且最后隱式的返回 this 。
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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