js制作可以延时消失的菜单
编程学习 2021-07-04 19:20www.dzhlxh.cn编程入门
这篇文章主要为大家详细介绍了基于JavaScript制作可以延时消失的菜单，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
本文实例为大家分享了js可延时消失的菜单，供大家参考，具体内容如下
代码：
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style>
*{padding:0;margin:0;}
ul{list-style:none;}
a{text-decoration:none;}
#menu{height:200px;border:1px solid #ccc;margin:40px auto;position:relative;}
#title{position:absolute;left:0;top:0;height:50px;border:1px solid yellow;background:blue;}
#title li{text-align:center;width:80px;height:30px;line-height:30px;float:left;background:#f1f1f1;border-radius:10px;color:#000;font-weight:bold;margin:10px 5px;cursor:pointer;}
#subtitle{height:30px;;border:1px solid #ccc;border-radius:10px;position:absolute;top:60px;left:10px;}
#subtitle:before{content:'';position:absolute;border-top:7px solid transparent;border-right:7px solid transparent;border-bottom:9px solid #ccc;border-left:7px solid transparent;top:-16px;left:30px;}
#subtitle:after{content:'';position:absolute;border-top:7px solid transparent;border-right:7px solid transparent;border-bottom:9px solid #fff;border-left:7px solid transparent;top:-15px;left:30px;}
#subtitle a{display:inline-block;height:20px;line-height:20px;margin:5px 5px;float:left;}
#subtitle a:hover{text-decoration:underline;}
</style>
<script>
window.onload = function () {
var title = document.getElementById('title');
var subtitle = document.getElementById('subtitle');
var aA = subtitle.getElementsByTagName('a');
var aLi = title.getElementsByTagName('li');
var arr = [
{ title : '首页', subtitle : ['首页1','首页2','首页3']},
{ title : '关于我们', subtitle : ['关于我们1','关于我们2','关于我们3','关于我们4','关于我们5']},
{ title : '课程', subtitle : ['课程1','课程2','课程3']},
{ title : '新闻', subtitle : ['新闻1','新闻2']},
];
var timer = null;
for ( var i = 0; i < arr.length; i++ ) {
var oLi = document.createElement('li');
oLi.innerHTML = arr[i].title;
oLi.index = i;
oLi.onmouseover = function () {
var width = parseInt(getStyle(this,'width'));
var marginRight = parseInt(getStyle(this,'marginRight'));
clearTimeout(timer);
subtitle.innerHTML = '';
createA(this.index);
subtitle.style.left = 10 + (width + marginRight) * this.index + 'px';
subtitle.style.display = 'block';
}
oLi.onmouseout = function () {
timer = setTimeout(function () {
subtitle.style.display = 'none';
}, 100);
}
title.appendChild(oLi);
}
subtitle.onmouseover = function () {
clearTimeout(timer);
this.style.display = 'block';
}
subtitle.onmouseout = function () {
this.style.display = 'none';
}
createA(0);
function createA(index){
for ( var j = 0; j < arr[index].subtitle.length; j++ ){
var oA = document.createElement('a');
oA.innerHTML = arr[index].subtitle[j];
subtitle.appendChild(oA);
}
}
function getStyle(ele, attr) {
return ele.currentStyle ? ele.currentStyle[attr] :
getComputedStyle(ele,0)[attr];
}
}
</script>
</head>
<body>
<div id="menu">
<ul id="title">
</ul>
<div id="subtitle">
</div>
</div>
</body>
</html>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持狼蚁SEO。
上一篇：js实现tab选项卡切换功能
下一篇：原生js实现下拉框功能（支持键盘事件）