- 技术博客
- 下拉菜单
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document
</title>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
a {
display: block;
height: 30px;
width: 80px;
border: 1px solid #666;
}
.box {
height: 30px;
width: 80px;
}
li {
list-style: none;
width: 80px;
border: 1px solid #666;
border-top: 0px;
}
</style>
</head>
<body>
<div class="box">
<a href="#">下拉菜单
</a>
<ul style="display: none;">
<li>1
</li>
<li>2
</li>
<li>3
</li>
<li>4
</li>
</ul>
</div>
<script>
var box = document.querySelector(".box");
box.onmouseover = function () {
this.children[1].style.display = "block";
}
box.onmouseout = function () {
this.children[1].style.display = "none";
}
</script>
</body>
</html>
