This article mainly introduces the use of bootstrap responsive navigation bar template in detail, including drop-down menus and pop-up box effects. It has certain reference value. Interested friends can refer to it. I hope it can help everyone.
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Document</title> <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" > <!--[if lt IE 9]> <script src="js/html5shiv.js"></script> <script src="js/respond.min.js"></script> <![endif]--> <!-- 设置距离顶部的距离,固定定位会挡住内容区 --> <style type="text/css"> body{ margin-top: 50px; } </style> </head> <body> <p class="navbar navbar-inverse navbar-fixed-top" id="menu-nav"> <p class="container"> <p class="navbar-header"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse"> <!-- sr-only仅阅读器能见实际不会呈现在页面上 --> <span class="sr-only">切换导航</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> <a class="navbar-brand" href="#">浏览器</a> </p> <p class="navbar-collapse collapse"> <ul class="nav navbar-nav"> <li class="active"><a href="#ad-carousel">综述</a></li> <li><a href="#summary-container">简述</a></li> <!-- 下拉菜单 --> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown">特点 <span class="caret"></span></a> <ul class="dropdown-menu"> <!-- href="#feature-tab"绑定详情页ID可定位 data-tab可以使用TAB切换选项 --> <li><a href="#feature-tab" data-tab="tab-chrome">Chrome</a></li> <li><a href="#feature-tab" data-tab="tab-firefox">Firefox</a></li> <li><a href="#feature-tab" data-tab="tab-safari">Safari</a></li> <li><a href="#feature-tab" data-tab="tab-opera">Opera</a></li> <li><a href="#feature-tab" data-tab="tab-ie">IE</a></li> </ul> </li> <li> <a href="#" data-toggle="modal" data-target="#about-modal">关于</a> </li> </ul> </p> </p> </p> <!-- 弹出框 放在body下保证层级最高--> <p class="modal fade" id="about-modal"> <p class="modal-dialog"> <p class="modal-content"> <p class="modal-header"> <button type="button" class="close" data-dismiss="modal">×</button> <h4 id="标题">标题</h4> </p> <p class="modal-body">文本</p> <p class="modal-footer"> <button type="button" class="btn btn-default" data-dismiss="modal">关闭</button> <button type="button" class="btn btn-primary">提交</button> </p> </p> </p> </p> <h1 id="你好">你好</h1> </body> <script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script> <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js" ></script> </html>
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The main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.

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Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.

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