Storage
    
      - 
        window.localStorage === localStorage
        
        
       
      - 
        getItem() / removeItem()
        
        
       
      - 
        getItem() / setter
        
        
       
      - 
        getter / setItem()
        
        
       
      - 
        delete operator
        
        
       
      - 
        setItem() / getItem()
        
        
       
      - 
        length
        
        
       
      - 
        clear()
        
        
       
      - 
        setItem() / key() / removeItem()
        
        
        
        
       
      - 
        sessionStorage set/get
        
        
       
      - 
        sessionStorage length
        
        
       
      - 
        window.sessionStorage clear
        
        
       
      
    
    
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