html
<!DOCTYPE html>
<html>
<head>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
<script>
var content = $("#myDiv").text();
var id = $("#myDiv").attr("id");
$("#myDiv").attr("class", "newClass");
$("#myDiv").addClass("highlight");
$("#myDiv").show();
$("#myDiv").on("click", function() {
});
</script>
</body>
</html>