Drop-down menu effect_html/css_WEB-ITnose-HTML Tutorial-php.cn

Home

Web Front-end

HTML Tutorial

Drop-down menu effect_html/css_WEB-ITnose

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Jun 24, 2016 am 11:46 AM

Drop-down menu effect

I have introduced to you some cool effects in HTML before. This article will introduce to you some drop-down menu effects that you can often see on websites. This menu effect It is generally divided into two layers. When our mouse passes through the first-level menu, the hidden second-level menu will be displayed. This ensures the beauty of the page without reducing the number of modules on the page, and can even increase the number of modules.

1. Without further ado, let’s use HTML CSS to achieve the above effect for you. First of all, please appreciate the rendering:

1. Interface layout code:

<body>     <div id="var">        <ul>            <li><a href="#">首页</a></li>            <li><a href="#">软件工程</a>                <ul>                    <li><a href="#">JAVA</a></li>                    <li><a href="#">NET</a></li>                </ul>            </li>            <li><a href="#">通信工程</a></li>            <li><a href="#">计算机管理</a>                <ul>                    <li><a href="#">JAVA</a></li>                    <li><a href="#">NET</a></li>                </ul>            </li>            <li><a href="#">物联网系</a></li>        </ul>    </div>      </body>

2. CSS code:

<style type="text/css">        *{padding: 0; margin: 0;}        #var{background-color: #eee; width: 600px; height: 40px; margin: 0 auto;}        ul{list-style: none;}        ul li{float: left; line-height: 40px; text-align: center; position: relative;}        a{ text-decoration: none; color:#000; display: block; padding:0 10px; height: 40px;}        a:HOVER {color: #fff; background-color: #666;}        ul li ul li{float: none; background-color: #eee; margin-top: 2px;}        ul li ul{ position: absolute; left: 0px; top:40px; display: none;}        ul li ul li a:HOVER { background-color: #06f;}        ul li:hover ul{ display: block;}    </style>

The CSS code is the most basic, I think Everyone can understand it. Some of them may seem a bit difficult. Let me analyze it with you. This code: list-style:none; means to remove the style, that is, remove the small black dots in front of each li. ; For text-decoration: none under a, it means removing the underline under the hyperlink; a:hover means the effect of the mouse passing over the hyperlink; display: block; means converting ul into a block-level element. The others are some general attributes, so I won’t go into details. As long as you understand the concept of the box model, this is not a problem.

2. HTML css javascript to achieve the above effect:

3. Interface code:

<body>    <div id="var">        <ul>            <li><a href="#">首页</a></li>            <li onmouseover="show(this)" onmouseout="quit(this)"><a href="#">软件工程</a>                <ul>                    <li><a href="#">JAVA</a></li>                    <li><a href="#">NET</a></li>                </ul>            </li>            <li><a href="#">物联网工程</a></li>            <li onmouseover="show(this)" onmouseout="quit(this)"><a href="#">信息管理</a>                <ul>                    <li ><a href="#">JAVA</a></li>                    <li><a href="#">NET</a></li>                </ul>            </li>            <li><a href="#">网络安全</a></li>            <li><a href="#">计算机科学与技术</a></li>        </ul>    </div>  </body>

4. css code:

<style type="text/css">        *{ margin: 0; padding: 0;}        #var{background-color: #eee; width: 600px; height: 40px; margin: 0 auto;}        ul{list-style: none;}        ul li{ float: left; line-height: 40px; text-align: center;  position: relative;}        a{ text-decoration: none; padding:0 10px; height: 40px; color:#000; display: block;}        a:HOVER { color: #fff; background-color: #666;}        ul li ul li{ float: none; background-color: #eee; margin-top: 2px;}        ul li ul{ position: absolute; left: 0px; top:40px; display: none;}        ul li ul li a:HOVER{ background-color: #06f;}    </style>

5. JavaScript to achieve the above effects:

    <script type="text/javascript">        function show(li){            var submenu = li.getElementsByTagName("ul")[0];            submenu.style.display="block";//鼠标经过时显示二级菜单        }        function quit(li){            var submenu = li.getElementsByTagName("ul")[0];            submenu.style.display="none";//鼠标离开时隐藏二级菜单        }    </script>

3. Implementation of change menu, interface appreciation:

🎜>

6. Interface code:

<body>    <div id="var">        <ul>            <li><a id="a1" href="#">首页<span>index</span></a></li>            <li><a href="#">课程大厅<span>home</span></a></li>            <li><a href="#">学习中心<span>study</span></a></li>            <li><a href="#">关于我们<span>me</span></a></li>            <li><a href="#">论坛<span>say</span></a></li>        </ul>    </div>  </body>

7. CSS code:

　　<style type="text/css">        *{ padding: 0px; margin: 0px;}        #var{ font-size: 12px; font-weight: bold; border-bottom: 8px solid #666; overflow: auto;}        #var li{ float: left; margin-left: 1px;  list-style: none;}        #var li a{ line-height: 20px; text-decoration: none; background-color: #ddd; color: #666; display: block; width: 80px; text-align: center;}        #var li a span{ display: none;}        #var li a:HOVER{ margin-top: -20px; background-color: #666; color: #fff;}        #var li a:HOVER span{ display: block;}    </style>

Let’s talk about this article I believe everyone has learned the menu bar design in this article. Have you ever felt the power of CSS? Anyway, I am convinced. As a website development engineer, if you say that you don’t understand SCC, you will probably be laughed out of your face. If you have any objections to the above content, please leave a message.

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

What is the difference between an HTML tag and an HTML attribute?May 14, 2025 am 12:01 AM

HTMLtagsdefinethestructureofawebpage,whileattributesaddfunctionalityanddetails.1)Tagslike,,andoutlinethecontent'splacement.2)Attributessuchassrc,class,andstyleenhancetagsbyspecifyingimagesources,styling,andmore,improvingfunctionalityandappearance.

The Future of HTML: Evolution and TrendsMay 13, 2025 am 12:01 AM

The future of HTML will develop in a more semantic, functional and modular direction. 1) Semanticization will make the tag describe the content more clearly, improving SEO and barrier-free access. 2) Functionalization will introduce new elements and attributes to meet user needs. 3) Modularity will support component development and improve code reusability.

Why are HTML attributes important for web development?May 12, 2025 am 12:01 AM

HTMLattributesarecrucialinwebdevelopmentforcontrollingbehavior,appearance,andfunctionality.Theyenhanceinteractivity,accessibility,andSEO.Forexample,thesrcattributeintagsimpactsSEO,whileonclickintagsaddsinteractivity.Touseattributeseffectively:1)Usese

What is the purpose of the alt attribute? Why is it important?May 11, 2025 am 12:01 AM

The alt attribute is an important part of the tag in HTML and is used to provide alternative text for images. 1. When the image cannot be loaded, the text in the alt attribute will be displayed to improve the user experience. 2. Screen readers use the alt attribute to help visually impaired users understand the content of the picture. 3. Search engines index text in the alt attribute to improve the SEO ranking of web pages.

HTML, CSS, and JavaScript: Examples and Practical ApplicationsMay 09, 2025 am 12:01 AM

The roles of HTML, CSS and JavaScript in web development are: 1. HTML is used to build web page structure; 2. CSS is used to beautify the appearance of web pages; 3. JavaScript is used to achieve dynamic interaction. Through tags, styles and scripts, these three together build the core functions of modern web pages.

How do you set the lang attribute on the tag? Why is this important?May 08, 2025 am 12:03 AM

Setting the lang attributes of a tag is a key step in optimizing web accessibility and SEO. 1) Set the lang attribute in the tag, such as. 2) In multilingual content, set lang attributes for different language parts, such as. 3) Use language codes that comply with ISO639-1 standards, such as "en", "fr", "zh", etc. Correctly setting the lang attribute can improve the accessibility of web pages and search engine rankings.

What is the purpose of HTML attributes?May 07, 2025 am 12:01 AM

HTMLattributesareessentialforenhancingwebelements'functionalityandappearance.Theyaddinformationtodefinebehavior,appearance,andinteraction,makingwebsitesinteractive,responsive,andvisuallyappealing.Attributeslikesrc,href,class,type,anddisabledtransform

How do you create a list in HTML?May 06, 2025 am 12:01 AM

TocreatealistinHTML,useforunorderedlistsandfororderedlists:1)Forunorderedlists,wrapitemsinanduseforeachitem,renderingasabulletedlist.2)Fororderedlists,useandfornumberedlists,customizablewiththetypeattributefordifferentnumberingstyles.

See all articles