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<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
  $("#p1").hover(function(){
    alert("You entered p1!");
  },
  function(){
    alert("Bye! You now leave p1!");
  }); 
});
</script>
</head>
<body>
<p id="p1">This is a paragraph.</p>
</body>
</html>