jquery div拖动效果

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>jQuery Drag and Drop</title>
    <style>
        #draggable {
            width: 100px;
            height: 100px;
            background-color: #f00;
            position: absolute;
            cursor: pointer;
        }
    </style>
</head>
<body>
    <div id="draggable"></div>

    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <script>
        $(document).ready(function() {
            var dragging = false;
            var offsetX, offsetY;

            $('#draggable').on('mousedown', function(e) {
                dragging = true;
                offsetX = e.pageX - $(this).offset().left;
                offsetY = e.pageY - $(this).offset().top;
            });

            $(document).on('mousemove', function(e) {
                if (dragging) {
                    $('#draggable').css({
                        left: e.pageX - offsetX,
                        top: e.pageY - offsetY
                    });
                }
            });

            $(document).on('mouseup', function() {
                dragging = false;
            });
        });
    </script>
</body>
</html>