<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>自动消失消息提示</title>
<style>/* 样式可以根据需求自行定义 */.message {position: fixed;top: 20px;left: 50%;transform: translateX(-50%);padding: 10px 20px;background-color: #4CAF50;color: white;border-radius: 5px;box-shadow: 0 0 10px rgba(0,0,0,0.2);display: none;}
</style>
</head>
<body><div class="message" id="messageBox"></div>
<button onclick="showMessage()">显示消息</button><script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script>
function showMessage() {var messageBox = $('#messageBox');messageBox.text('这是一条自动消失的消息！');messageBox.fadeIn();setTimeout(function() {messageBox.fadeOut();}, 3000); // 3秒后自动消失
}
</script></body>
</html>
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