jQuery implements secondary drop-down menu effect_jquery
Everyone knows that jQuery is a framework that encapsulates JS to make it more convenient to use. The previous two blog posts were implemented using CSS styles and JS respectively, so this article will use jQuery to implement the secondary drop-down menu.
The knowledge required to implement using JQuery is:
- 1) Use $(function(){...}) to get the HTML element you want to act on.
- 2) Find child elements by using the children() method.
- 3) Display HTML elements by using the show() method.
- 4) Hide HTML elements by using the hide() method.
- 5) jQuery library reference method:
The first method: Download the jQuery library to your computer and then quote it. I downloaded the jquery-1.7.1.min.js version.
For example:
The second method: Directly reference the jQuery library file on the online server, such as Google server jQuery library, Baidu server jQuery library, etc.
Quoting the jQuery library file on Baidu server
Let’s take a look at the production process:
1. Call the jQuery library: write code and reference the jQuery library. Since Google has withdrawn from mainland China, it is recommended to use the jQuery library of Baidu server.
Note: Baidu server’s jQuery library address: http://libs.baidu.com/jquery/1.9.0/jquery.js
2. Write a function to display the submenu, use $, and obtain the first-level menu li through the class name, use children() to find the child element ul of li, and use the show() method to display the second-level menu.
3. Write a hidden submenu function, use $, and get the first-level menu li through the class name, use children() to find the child element ul of li, and use the hide() method to hide the second-level menu.
4. Do browser compatibility testing, at least five browsers. IE7,8,9, Firefox, Google, 2345 browser, etc.
Let’s take a look at the renderings first:
Finally, let’s take a look at the code, which is not much different from the previous one:
HTML code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>下拉菜单</title>
<link rel="stylesheet" type="text/css" href="style.css" />
<!--引用百度服务器的jQuery库-->
<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script>
<script type="text/javascript" src="script.js"></script>
</head>
<body>
<div id="nav" class="nav">
<ul>
<li><a href="#">网站首页</a></li>
<li class="navmenu"><a href="#">课程大厅</a>
<ul>
<li><a href="#">JavaScript</a></li>
<li><a href="#">jQuery</a></li>
<li><a href="#">Ajax</a></li>
</ul>
</li>
<li class="navmenu"><a href="#">学习中心</a>
<ul>
<li><a href="#">视频学习</a></li>
<li><a href="#">案例学习</a></li>
<li><a href="#">交流平台</a></li>
</ul>
</li>
<li><a href="#">经典案例</a></li>
<li><a href="#">关于我们</a></li>
</ul>
</div>
</body>
</html>
/*CSS全局设置*/
*{
margin:0;
padding:0;
}
.nav{
background-color:#EEEEEE;
height:40px;
width:450px;
margin:0 auto;
}
ul{
list-style:none;
}
ul li{
float:left;
line-height:40px;
text-align:center;
}
a{
text-decoration:none;
color:#000000;
display:block;
width:90px;
height:40px;
}
a:hover{
background-color:#666666;
color:#FFFFFF;
}
ul li ul li{
float:none;
background-color:#EEEEEE;
}
ul li ul{
display:none;
}
/*为了兼容IE7写的CSS样式，但是必须写在a:hover前面*/
ul li ul li a:link,ul li ul li a:visited{
background-color:#EEEEEE;
}
ul li ul li a:hover{
background-color:#009933;
}
$(function(){
$(".navmenu").mouseover(function(){
$(this).children("ul").show();
})
$(".navmenu").mouseout(function(){
$(this).children("ul").hide();
})
}) 
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1386
52
How to make drop-down menu in WPS table
Mar 21, 2024 pm 01:31 PM
How to make the WPS table drop-down menu: After selecting the cell where you want to set the drop-down menu, click "Data", "Validity" in sequence, and then make the corresponding settings in the pop-up dialog box to pull down our menu. As a powerful office software, WPS has the ability to edit documents, statistical data tables, etc., which provides a lot of convenience for many people who need to deal with text, data, etc. In order to skillfully use WPS software to provide us with a lot of convenience, we need to be able to master various very basic operations of WPS software. In this article, the editor will share with you how to use WPS software. Perform drop-down menu operations in the WPS table that appears. After opening the WPS form, first select the
Detailed explanation of jQuery reference methods: Quick start guide
Feb 27, 2024 pm 06:45 PM
Detailed explanation of jQuery reference method: Quick start guide jQuery is a popular JavaScript library that is widely used in website development. It simplifies JavaScript programming and provides developers with rich functions and features. This article will introduce jQuery's reference method in detail and provide specific code examples to help readers get started quickly. Introducing jQuery First, we need to introduce the jQuery library into the HTML file. It can be introduced through a CDN link or downloaded
How to use PUT request method in jQuery?
Feb 28, 2024 pm 03:12 PM
How to use PUT request method in jQuery? In jQuery, the method of sending a PUT request is similar to sending other types of requests, but you need to pay attention to some details and parameter settings. PUT requests are typically used to update resources, such as updating data in a database or updating files on the server. The following is a specific code example using the PUT request method in jQuery. First, make sure you include the jQuery library file, then you can send a PUT request via: $.ajax({u
How to remove the height attribute of an element with jQuery?
Feb 28, 2024 am 08:39 AM
How to remove the height attribute of an element with jQuery? In front-end development, we often encounter the need to manipulate the height attributes of elements. Sometimes, we may need to dynamically change the height of an element, and sometimes we need to remove the height attribute of an element. This article will introduce how to use jQuery to remove the height attribute of an element and provide specific code examples. Before using jQuery to operate the height attribute, we first need to understand the height attribute in CSS. The height attribute is used to set the height of an element
jQuery Tips: Quickly modify the text of all a tags on the page
Feb 28, 2024 pm 09:06 PM
Title: jQuery Tips: Quickly modify the text of all a tags on the page In web development, we often need to modify and operate elements on the page. When using jQuery, sometimes you need to modify the text content of all a tags in the page at once, which can save time and energy. The following will introduce how to use jQuery to quickly modify the text of all a tags on the page, and give specific code examples. First, we need to introduce the jQuery library file and ensure that the following code is introduced into the page: <
Use jQuery to modify the text content of all a tags
Feb 28, 2024 pm 05:42 PM
Title: Use jQuery to modify the text content of all a tags. jQuery is a popular JavaScript library that is widely used to handle DOM operations. In web development, we often encounter the need to modify the text content of the link tag (a tag) on the page. This article will explain how to use jQuery to achieve this goal, and provide specific code examples. First, we need to introduce the jQuery library into the page. Add the following code in the HTML file:
How to tell if a jQuery element has a specific attribute?
Feb 29, 2024 am 09:03 AM
How to tell if a jQuery element has a specific attribute? When using jQuery to operate DOM elements, you often encounter situations where you need to determine whether an element has a specific attribute. In this case, we can easily implement this function with the help of the methods provided by jQuery. The following will introduce two commonly used methods to determine whether a jQuery element has specific attributes, and attach specific code examples. Method 1: Use the attr() method and typeof operator // to determine whether the element has a specific attribute
How to set up excel drop-down menu to automatically associate data? Excel drop-down menu automatically associates data settings
Mar 13, 2024 pm 03:04 PM
How to set up Excel drop-down menu to automatically associate data? When we use excel, we use drop-down menus to quickly operate our data. However, many users also ask how to set up the drop-down menu to automatically associate data? Let this site introduce to users in detail how to set up automatic data association for excel drop-down menus. How to set up excel drop-down menu to automatically associate data 1. Open the Excel table. 2. Enter a piece of related data in a blank cell. 3. Then select the cells where you want to add a drop-down list. 4. Click [Data]-[Data Verification] on the menu bar. 5. Select [Sequence] for verification conditions. 6. Click the button pointed by the arrow in the picture and select
