let darkmode = false ;
const BUTTON= Document.getElementbyId ('Switch ');
const Body = document.querySelector ('body') ;


if (window.matchMedia('(prefers-scheme:dark )').matches ) {
darkmode= true ;
} else{
    darkmode= false;
}

console.log(darkmode);

const switchMode = () => {
    darkmode = !darkmode;
    setclassTobody();

}

const setclassTobody =() => {
if (darkmode){
   Body.classList.remove('light');
   Body.classList.add('dark');
   
}else{
 Body.classList.add('light');
   Body.classList.remove('dark');

}

} ;

BUTTON.addEventLister('click', switchMode );
setclassTobody;