JS implements simple four arithmetic operations

This time I will bring you JSimplementation of simple four arithmetic operations, JS implementation of simple four arithmetic operationsWhat are the precautions, the following are Let’s take a look at practical cases.

The specific code is as follows:

    

        
   
            

                简易计算器
            
        
 
        
             
            
                
            
 
        
 
        
             
            

                +
            
 
            

                -
            
 
            

                *
            
 
            

                /
            
 
        
 
        
            
            

                7
            
            

                8
            
            

                9
            
            

                0
            
        
        
            
          

                4
            
 
            

                5
            
 
            

                6
            
 
            

                .
            
 
        
 
        
             
            

                1
            
 
            

                2
            
 
            

                3
            
 
            

                =
            
 
        
    

For this program, the order of judgment is very important, otherwise the " " number will be stored in s2 and s4 instead of s3.

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