if screen size mobile{

  $("#element).click(some function)
}
else if screen size desktop{
  $("#element).hover(some function)
}

或其他解决方法

$("#element").click(function(){
   if(screen size is mobile){
     //do something (show div)
   }
   else if(screen size is desktop){
     //do something
   }
});

$("#element").hover(function(){
   if(screen size is mobile){
     //do something 
   }
   else if(screen size is desktop){
     //do something (show div)
   }
});