首页
所有分类
TAGS
文字工具 EMOJI BIBLE
编程 Javascript

js,jq,css多方面实现简易下拉菜单功能

Posted in Javascript onMay 13, 2017

效果图预览

js,jq,css多方面实现简易下拉菜单功能

一 、css实现

html代码部分

<!DOCTYPE html>
<html>
 <head>
  <meta charset="UTF-8">
  <title>html+css下拉菜单</title>
  <link rel="stylesheet" type="text/css" href="css/style.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" />
 </head>
 <body>
  <ul class="menu">
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >首页</a>
   </li>
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >菜单一</a>
    <ul>
     <li>内容一</li>
     <li>内容一</li>
     <li>内容一</li>
    </ul>
   </li>
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >菜单二</a>
    <ul>
     <li>内容二</li>
     <li>内容二</li>
     <li>内容二</li>
    </ul>
   </li>
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >菜单三</a>
    <ul>
     <li>内容三</li>
     <li>内容三</li>
     <li>内容三</li>
    </ul>
   </li>
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >菜单四</a>
   </li>
  </ul>
 </body>
</html>

css部分

*{
 padding: 0;
 margin: 0;
}
a{
 text-decoration: none;
 color: #000;
}
ul,li{
 list-style: none;
}
.menu{
 margin: 50px auto;
 width: 500px;
 height: 35px;
 background-color: #ccc;
 text-align: center;
 line-height: 35px;
}
.menu li{
 float: left;
 width: 20%;
 position: relative;
}
.menu li:hover ul{
 display: block;
}
.menu li a{
 display: block; 
}
.menu li a:hover{
 background-color: burlywood;
}
.menu li ul{
 display: none;
 position: absolute;
}
.menu li ul li{
 width: 100%;
 margin-top: 2px;
 background-color: darkgray;
}
.menu li ul li:hover{
 cursor: pointer;
 background-color: chartreuse;
}

二、js实现

html和js部分（实现方法一）

<!DOCTYPE html>
<html>
 <head>
  <meta charset="UTF-8">
  <title>JS下拉菜单</title>
  <link rel="stylesheet" type="text/css" href="css/style.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" />
 </head>
 <body>
  <ul class="menu" id="menu">
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >首页</a>
   </li>
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >菜单一</a>
    <ul>
     <li>内容一</li>
     <li>内容一</li>
     <li>内容一</li>
    </ul>
   </li>
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >菜单二</a>
    <ul class="show">
     <li>内容二</li>
     <li>内容二</li>
     <li>内容二</li>
    </ul>
   </li>
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >菜单三</a>
    <ul class="hide">
     <li>内容三</li>
     <li>内容三</li>
     <li>内容三</li>
    </ul>
   </li>
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >菜单四</a>
   </li>
  </ul>
  <script type="text/javascript">    
   window.onload = function(){ 
    function $(id){
     return typeof id == "string"?document.getElementById(id):id; 
    }
    var menu_li = $("menu").getElementsByTagName("li");    
    for(var i = 0; i < menu_li.length; i++){
     menu_li[i].onmouseover = function(){
      var ss = this.getElementsByTagName("ul")[0];
      if(ss != undefined){
       ss.style.display = "block";
      }
     }
    }
    for(var j = 0; j < menu_li.length; j++){
     menu_li[j].onmouseout = function(){
      var ssa = this.getElementsByTagName("ul")[0];
      if(ssa != undefined){
       ssa.style.display = "none";
      }     
     }
    }    
   }         
  </script>
 </body>
</html>

html和js部分（实现方法二）

<!DOCTYPE html>
<html>
 <head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <style>
   * {
    padding: 0;
    margin: 0;
   }
   li {
    list-style: none;
    float: left;
   }
   #tabCon {
    clear: both;
   }
   #tabCon div {
    display: none;
   }
   #tabCon div.fdiv {
    display: block;
   }
  </style>
 </head>
 <body>
  <div id="tanContainer">
   <div id="tab">
    <ul>
     <li class="fli">标题一</li>
     <li>标题二</li>
     <li>标题三</li>
     <li>标题四</li>
    </ul>
   </div>
   <div id="tabCon">
    <div class="fdiv">内容一</div>
    <div>内容二</div>
    <div>内容三</div>
    <div>内容四</div>
   </div>
  </div>
 </body>
 <script>
  function $(id){
   return typeof id=="string"?document.getElementById(id):id;
  }
  var EventUtil = {
   addHandler: function(element, type, handler) {
    if(element.addEventListener) {
     element.addEventListener(type, handler, false);
    } else if(element.attachEvent) {
     element.attachEvent("on" + type + handler);
    } else {
     element["on" + type] = handler;
    }
   },
   removeHandler: function(element, type, handler) {
    if(element.removeEventListener) {
     element.removeEventListener(type, handler, false);
    } else if(element.detachEvent) {
     element.detachEvent("on" + type + handler);
    } else {
     element["on" + type] = null;
    }
   }
  }
  var tabs = $("tab").getElementsByTagName("li");
  var divs = $("tabCon").getElementsByTagName("div"); 
  for(var i = 0; i < tabs.length; i++) {
   var set = function() {
    change(this);
   }
   EventUtil.addHandler(tabs[i], "click", set);
   //tabs[i].onclick=function(){change(this);}
  }
  function change(obj) {
   console.log(obj);
   for(var i = 0; i < tabs.length; i++) {
    if(tabs[i] == obj) {console.log(tabs[i]);
//     tabs[i].style.display = "block";
     divs[i].style.display = "block";
    } else {
//     tabs[i].style.display = "none";
     divs[i].style.display = "none";
    }
   }
  }
 </script>
</html>

css部分

*{
 padding: 0;
 margin: 0;
}
a{
 text-decoration: none;
 color: #000;
}
ul,li{
 list-style: none;
}
.menu{
 margin: 50px auto;
 width: 500px;
 height: 35px;
 background-color: #ccc;
 text-align: center;
 line-height: 35px;
}
.menu li{
 float: left;
 width: 20%;
 position: relative;
}
.menu li a{
 display: block; 
}
.menu li a:hover{
 background-color: burlywood;
}
.menu li ul{
 display: none;
 position: absolute;
 left: 0;
}
.menu li ul li{
 width: 100%;
 margin-top: 2px;
 background-color: darkgray;
}
.menu li ul li:hover{
 cursor: pointer;
 background-color: chartreuse;
}

三、JQ实现

html和jq部分

<!DOCTYPE html>
<html>
 <head>
  <meta charset="UTF-8">
  <title>JS下拉菜单</title>
  <link rel="stylesheet" type="text/css" href="css/style.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" />
 </head>
 <body>
  <ul class="menu" id="menu">
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >首页</a>
   </li>
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >菜单一</a>
    <ul>
     <li>内容一</li>
     <li>内容一</li>
     <li>内容一</li>
    </ul>
   </li>
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >菜单二</a>
    <ul class="show">
     <li>内容二</li>
     <li>内容二</li>
     <li>内容二</li>
    </ul>
   </li>
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >菜单三</a>
    <ul class="hide">
     <li>内容三</li>
     <li>内容三</li>
     <li>内容三</li>
    </ul>
   </li>
   <li>
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >菜单四</a>
   </li>
  </ul>
  <script type="text/javascript" src="../../jq/jquery-1.7.2.min.js"></script>
  <script type="text/javascript">    
   $(function(){
    $(".menu li").hover(function(){
     $(this).children("ul").show();
    },function(){
     $(this).children("ul").hide();
    });
   });
  </script>
 </body>
</html>

css部分

*{
 padding: 0;
 margin: 0;
}
a{
 text-decoration: none;
 color: #000;
}
ul,li{
 list-style: none;
}
.menu{
 margin: 50px auto;
 width: 500px;
 height: 35px;
 background-color: #ccc;
 text-align: center;
 line-height: 35px;
}
.menu li{
 float: left;
 width: 20%;
 position: relative;
}
.menu li a{
 display: block; 
}
.menu li a:hover{
 background-color: burlywood;
}
.menu li ul{
 display: none;
 position: absolute;
 left: 0;
}
.menu li ul li{
 width: 100%;
 margin-top: 2px;
 background-color: darkgray;
}
.menu li ul li:hover{
 cursor: pointer;
 background-color: chartreuse;
}

以上就是通过css,js,jq三个方式实现简易下拉菜单的写法，有更好的写法欢迎你的指教。希望大家对三水点靠木网站的支持！

js,jq,css多方面实现简易下拉菜单功能

- Author -

404_noEsponse

声明：登载此文出于传递更多信息之目的，并不意味着赞同其观点或证实其描述。

Javascript 相关文章推荐
一个js写的日历（代码部分网摘）
Sep 20 Javascript
js代码实现的加入收藏效果并兼容主流浏览器
Jun 23 Javascript
jquery JSON的解析方式示例介绍
Jul 27 Javascript
Jquery实时监听input value的实例
Jan 26 Javascript
jquery ajax异步提交表单数据的方法
Oct 27 jQuery
解决vue打包项目后刷新404的问题
Mar 06 Javascript
Vue 第三方字体图标引入 Font Awesome的方法
Sep 28 Javascript
element el-input directive数字进行控制
Oct 11 Javascript
详解在vue-cli项目下简单使用mockjs模拟数据
Oct 19 Javascript
微信小程序实现文件、图片上传功能
Aug 18 Javascript
vuejs element table 表格添加行,修改,单独删除行,批量删除行操作
Jul 18 Javascript
vue组件讲解(is属性的用法)模板标签替换操作
Sep 04 Javascript
easyui combogrid实现本地模糊搜索过滤多列
May 13 #Javascript
web.js.字符串与正则表达式操作
May 13 #Javascript
JS实现动态给标签控件添加事件的方法示例
May 13 #Javascript
jQuery插件FusionCharts绘制的2D条状图效果【附demo源码】
May 13 #jQuery
jQuery插件FusionCharts绘制的2D双柱状图效果示例【附demo源码】
May 13 #jQuery
vue.js 初体验之Chrome 插件开发实录
May 13 #Javascript
JS中cookie的使用及缺点讲解
May 13 #Javascript
蓝屏(1) svg(1) 输入法(2) win7(2) Sunmao(1) 声卡驱动(1) Sentry(1) 鸿蒙(2) 鸿蒙3.0(1) 滚动条(1)
You might like
粗略计算在线时间,bug:ip相同
2006/12/09 PHP
PHP COOKIE设置为浏览器进程
2009/06/21 PHP
简单谈谈php中ob_flush和flush的区别
2014/11/27 PHP
php正则修正符用法实例详解
2016/12/29 PHP
javascript Keycode对照表
2009/10/24 Javascript
基于jQuery实现表格数据的动态添加与统计的代码
2011/01/31 Javascript
javascript中onmouse事件在div中失效问题的解决方法
2012/01/09 Javascript
JS批量修改PS中图层名称的方法
2014/01/26 Javascript
Jquery通过JSON字符串创建JSON对象
2014/08/24 Javascript
bootstrap table 多选框分页保留示例代码
2017/03/08 Javascript
微信小程序学习笔记之本地数据缓存功能详解
2019/03/29 Javascript
微信小程序实现上传word、txt、Excel、PPT等文件功能
2019/05/23 Javascript
jQuery Ajax async=&gt;false异步改为同步时,解决导致浏览器假死的问题
2019/07/22 jQuery
更优雅的微信小程序骨架屏实现详解
2019/08/07 Javascript
js blob类型url的视频下载问题的解决
2019/11/29 Javascript
Bootstrap实现前端登录页面带验证码功能完整示例
2020/03/26 Javascript
[46:57]EG vs Winstrike 2018国际邀请赛小组赛BO2 第二场 8.18
2018/08/19 DOTA
跟老齐学Python之玩转字符串(2)
2014/09/14 Python
python一键升级所有pip package的方法
2017/01/16 Python
Python爬虫实现爬取京东手机页面的图片(实例代码)
2017/11/30 Python
对python中的iter()函数与next()函数详解
2018/10/18 Python
python判断所输入的任意一个正整数是否为素数的两种方法
2019/06/27 Python
Python 找出出现次数超过数组长度一半的元素实例
2020/05/11 Python
让Django的BooleanField支持字符串形式的输入方式
2020/05/20 Python
浅谈Python协程
2020/06/17 Python
python 字符串的驻留机制及优缺点
2020/06/19 Python
python 爬虫网页登陆的简单实现
2020/11/30 Python
HTML5在canvas中绘制复杂形状附效果截图
2014/06/23 HTML / CSS
大都会艺术博物馆商店：The Met Store
2018/06/22 全球购物
ToysRus日本官网：玩具反斗城
2018/09/08 全球购物
生产车间实习自我鉴定
2013/09/23 职场文书
如何写好自荐信
2014/04/07 职场文书
工作说明书范文
2014/05/07 职场文书
2014国庆节幼儿园亲子活动方案
2014/09/16 职场文书
4种非常实用的python内置数据结构
2021/04/28 Python
只用20行Python代码实现屏幕录制功能
2021/06/02 Python