How to disable elements on refresh.

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$w . onReady ( **function**  () { 
    **let**  btn2hasBeenClicked  =  local . getItem ( "btn2Clicked" ) 

    **if**  ( btn2hasBeenClicked ) { 
        $w ( "#button2" ). hide 
    }  **else**  { 
        $w ( "#button2" ). show () 
        } 
    }); 
    
    export function  button2_click ( event ) { 
        local . setItem ( "btn2Clicked" ,  "clicked" ) 
        $w ( "#button2" ). enable 

        setTimeout ( **function** () { 
    $w ( "#button2" ). show ( "fade" );  
  },  10000 ); 
    } 

    ``` 

I tried this on a test page, how would I implement onReady function, and storage module into my first posted code.  

Is the code snippet above properly structured?