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
javascript appendChild,innerHTML,join性能比较代码
Aug 29 Javascript
cnblogs csdn 代码运行框实现代码
Nov 02 Javascript
jquery+json实现的搜索加分页效果
Mar 31 Javascript
javascript读写json示例
Apr 11 Javascript
javascript中解析四则运算表达式的算法和示例
Aug 11 Javascript
再探JavaScript作用域
Sep 24 Javascript
jquery+ajax验证不通过也提交表单问题处理
Dec 12 Javascript
jQuery双向列表选择器select版
Nov 01 Javascript
Bootstrap 3 进度条的实现
Feb 22 Javascript
AngularJS中的promise用法分析
May 19 Javascript
vue2.5.2使用http请求获取静态json数据的实例代码
Feb 27 Javascript
js实现左右两侧浮动广告
Jul 09 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
group by(1) HBuilder(1) Express(1) kubernetes(1) 分布式追踪(1) delete in(1) GPU(1) 查询效率(1) 条形码(1) Three.js(1)
You might like
如何正确理解PHP的错误信息
2006/10/09 PHP
使用 eAccelerator加速PHP代码的目的
2007/03/16 PHP
php 带逗号千位符数字的处理方法
2012/01/10 PHP
整理的一些实用WordPress后台MySQL操作命令
2013/01/07 PHP
PHP实现提高SESSION响应速度的几种方法详解
2019/08/09 PHP
通过代码实例解析PHP session工作原理
2020/12/11 PHP
jquery 学习笔记 传智博客佟老师附详细注释
2020/09/12 Javascript
优化 JavaScript 代码的方法小结
2009/07/16 Javascript
JavaScript replace(rgExp,fn)正则替换的用法
2010/03/04 Javascript
jquery插件validate验证的小例子
2013/05/08 Javascript
深入理解javascript严格模式(Strict Mode)
2014/11/28 Javascript
js实现iframe跨页面调用函数的方法
2014/12/13 Javascript
ES6中的箭头函数实例详解
2017/04/06 Javascript
使用D3.js制作图表详解
2017/08/13 Javascript
微信小程序学习笔记之表单提交与PHP后台数据交互处理图文详解
2019/03/28 Javascript
微信小程序实现下拉刷新动画
2019/06/21 Javascript
JS数组扁平化(flat)方法总结详解
2019/06/24 Javascript
element-ui table组件如何使用render属性的实现
2019/11/04 Javascript
vue请求数据的三种方式
2020/03/04 Javascript
Element Notification通知的实现示例
2020/07/27 Javascript
Python3下错误AttributeError: ‘dict’ object has no attribute’iteritems‘的分析与解决
2017/07/06 Python
快速排序的四种python实现（推荐）
2019/04/03 Python
NumPy 数组使用大全
2019/04/25 Python
Python使用百度翻译开发平台实现英文翻译为中文功能示例
2019/08/08 Python
Python OrderedDict的使用案例解析
2019/10/25 Python
tensorflow 固定部分参数训练,只训练部分参数的实例
2020/01/20 Python
Python3.9又更新了:dict内置新功能
2020/02/28 Python
Python模块相关知识点小结
2020/03/09 Python
python通用数据库操作工具 pydbclib的使用简介
2020/12/21 Python
Python使用pyenv实现多环境管理
2021/02/05 Python
使用Python爬取小姐姐图片（beautifulsoup法）
2021/02/11 Python
班班通项目实施方案
2014/02/25 职场文书
国际经济贸易专业自荐信
2014/06/13 职场文书
戒毒悔改检讨书
2014/09/21 职场文书
2015年法院工作总结范文
2015/04/28 职场文书
教你使用VS Code的MySQL扩展管理数据库的方法
2022/01/22 MySQL