jquery点击弹出下拉层

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>jQuery Dropdown Example</title>
    <style>
        #dropdown {
            display: none;
            position: absolute;
            background-color: #f9f9f9;
            min-width: 160px;
            box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
            z-index: 1;
        }
        #dropdown a {
            color: black;
            padding: 12px 16px;
            text-decoration: none;
            display: block;
        }
        #dropdown a:hover {
            background-color: #f1f1f1;
        }
    </style>
</head>
<body>

<h2>Dropdown Example</h2>
<button id="dropdownBtn">Click me</button>
<div id="dropdown">
    <a href="#">Option 1</a>
    <a href="#">Option 2</a>
    <a href="#">Option 3</a>
</div>

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script>
    $(document).ready(function(){
        $("#dropdownBtn").click(function(){
            $("#dropdown").toggle();
        });
    });
</script>

</body>
</html>

$(document).click(function(event) {
    if (!$(event.target).closest("#dropdownBtn").length && !$(event.target).closest("#dropdown").length) {
        $("#dropdown").hide();
    }
});