css技巧
content: attr(data-tooltip);：将 data-tooltip 属性的值作为工具提示的内容。
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>CSS Tooltip 示例</title>
<style>
[data-tooltip] {
position: relative;
cursor: pointer;
margin: 0;
}
[data-tooltip]:before {
content: attr(data-tooltip);
position: absolute;
bottom: -100%;
left: 0;
background-color: black;
color: white;
border-radius: 5px;
white-space: nowrap;
opacity: 0;
visibility: hidden;
transition: opacity 0.3s, visibility 0.3s;
}
[data-tooltip]:hover:before {
opacity: 1;
visibility: visible;
}
</style>
</head>
<body>
<p data-tooltip="这是一个工具提示">将鼠标悬停在此处查看工具提示。</p>
</body>
</html>
效果
