在做前端网页的时候，会涉及到很多界面，有的时候，这些界面都会有重复的代码，比如侧边栏菜单的重复代码，头部导航的 重复代码，底部的重复代码，这个时候，为了使每个页面的代码看起来简洁明了，我们需要把这些重复的代码放到公共的页面里面，在具体页面只需引用即可。
主要代码
<div id="head"></div>
<div id="side"></div>
<script>
$("#head").load("com/head.html");
$("#side").load("com/side.html");
</script>
1：在文件里面新建head.html和side.html
2：打开head.html，side.html类似
将头部重复的代码复制在head.html界面里面
head.html
<div class="header-right">
<div class="profile_details_left"><!--notifications of menu start -->
<ul class="nofitications-dropdown">
<li class="dropdown head-dpdn">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" aria-expanded="false"><i class="fa fa-bell"></i><span class="badge blue">3</span></a>
<ul class="dropdown-menu">
<li><a href="#">
<div class="user_img"><img src="images/p5.png" alt=""></div>
<div class="notification_desc">
<p>危险区域报警</p>
</div>
<div class="clearfix"></div>
</a></li>
<li class="odd"><a href="#">
<div class="user_img"><img src="images/p6.png" alt=""></div>
<div class="notification_desc">
<p>滞留报警</p>
</div>
<div class="clearfix"></div>
</a></li>
<li><a href="#">
<div class="user_img"><img src="images/p7.png" alt=""></div>
<div class="notification_desc">
<p>sos报警</p>
</div>
<div class="clearfix"></div>
</a></li>
<li><a href="#">
<div class="user_img"><img src="images/p8.png" alt=""></div>
<div class="notification_desc">
<p>脱岗串岗报警</p>
</div>
<div class="clearfix"></div>
</a></li>
<li>
</li>
</ul>
</li>
<li class="dropdown head-dpdn">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" aria-expanded="false"><i class="fa fa-tasks"></i><span class="badge blue1">9</span></a>
<ul class="dropdown-menu">
<li><a href="#">
<div class="task-info">
<span class="task-desc">南通部分</span>
<div class="clearfix"></div>
</div>
</a></li>
<li><a href="#">
<div class="task-info">
<span class="task-desc">无锡部分</span>
<div class="clearfix"></div>
</div>
</a></li>
<li><a href="#">
<div class="task-info">
<span class="task-desc">苏州部分</span>
<div class="clearfix"></div>
</div>
</a></li>
<li><a href="#">
<div class="task-info">
<span class="task-desc">成都部分</span>
<div class="clearfix"></div>
</div>
</a></li>
</ul>
</li>
</ul>
<div class="clearfix"> </div>
</div>
<!--notification menu end -->
<div class="profile_details">
<ul>
<li class="dropdown profile_details_drop">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
<div class="profile_img">
<span class="prfil-img"><img src="images/p1.png" alt=""> </span>
<div class="user-name">
<p>王婷</p>
<span>Admin</span>
</div>
<i class="fa fa-angle-down lnr"></i>
<i class="fa fa-angle-up lnr"></i>
<div class="clearfix"></div>
</div>
</a>
<ul class="dropdown-menu drp-mnu">
<li> <a href="#"><i class="fa fa-user"></i> 修改密码</a> </li>
<li> <a href="#"><i class="fa fa-sign-out"></i>退出登录</a> </li>
</ul>
</li>
</ul>
</div>
<div class="clearfix"> </div>
</div>
<div class="clearfix"> </div>
side.html
<div class="menu">
<ul id="menu" >
<li id="menu-home" ><a href="index.html"><i class="fa fa-tachometer"></i><span>实时监控</span></a></li>
<li><a href="#"><i class="fa fa-cogs"></i><span>数据管理</span><span class="fa fa-angle-right" style="float: right"></span></a>
<ul>
<li><a href="grids.html">人员管理</a></li>
<li><a href="product.html">访客管理</a></li>
</ul>
</li>
<li id="menu-comunicacao" ><a href="#"><i class="fa fa-book nav_icon"></i><span>目标位置</span><span class="fa fa-angle-right" style="float: right"></span></a>
<ul id="menu-comunicacao-sub" >
<li id="menu-mensagens" style="width: 120px" ><a href="product.html">员工位置</a>
</li>
<li id="menu-arquivos" ><a href="product.html">访客位置</a></li>
<!-- <li id="menu-arquivos" ><a href="icons.html">Icons</a></li>-->
</ul>
</li>
<li><a href="product.html"><i class="fa fa-map-marker"></i><span>轨迹回放</span></a></li>
<li id="menu-academico" ><a href="#"><i class="fa fa-file-text"></i><span>电子考勤</span><span class="fa fa-angle-right" style="float: right"></span></a>
<ul id="menu-academico-sub" >
<li id="menu-academico-boletim" ><a href="login.html">签到设置</a></li>
<li id="menu-academico-avaliacoes" ><a href="product.html">签到查询</a></li>
</ul>
</li>
<!-- <li><a href="charts.html"><i class="fa fa-bar-chart"></i><span>11</span></a></li>-->
<li><a href="#"><i class="fa fa-envelope"></i><span>告警信息</span><span class="fa fa-angle-right" style="float: right"></span></a>
<ul id="menu-academico-sub" >
<li id="menu-academico-avaliacoes" ><a href="product.html">员工告警</a></li>
<li id="menu-academico-boletim" ><a href="product.html">访客告警</a></li>
</ul>
</li>
<li><a href="#"><i class="fa fa-cog"></i><span>账户管理</span><span class="fa fa-angle-right" style="float: right"></span></a>
<ul id="menu-academico-sub" >
<li id="menu-academico-avaliacoes" ><a href="product.html">部门管理</a></li>
<li id="menu-academico-boletim" ><a href="product.html">用户管理</a></li>
<li ><a href="product.html">权限管理</a></li>
</ul>
</li>
<li><a href="#"><i class="fa fa-shopping-cart"></i><span>系统配置</span><span class="fa fa-angle-right" style="float: right"></span></a>
<ul id="menu-academico-sub" >
<li id="menu-academico-avaliacoes" ><a href="product.html">围栏配置</a></li>
<li id="menu-academico-boletim" ><a href="product.html">参数配置</a></li>
</ul>
</li>
</ul>
</div>
3：在当前界面（test.html）引入公共代码
test.html
<!DOCTYPE HTML>
<html>
<head>
<title>Home</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link href="css/bootstrap.css" rel="stylesheet" type="text/css" media="all">
<link href="css/style.css" rel="stylesheet" type="text/css" media="all" />
<link href="css/font-awesome.css" rel="stylesheet">
<script src="js/jquery-2.1.1.min.js"></script>
<script src="js/bootstrap.js">
</script>
</head>
<body>
<div class="page-container">
<div class="left-content">
<div class="mother-grid-inner">
<!--头部导航导入-->
<div class="header-main">
<div id="head"></div>
</div>
<div class="inner-block">
<div class="climate" style="height: 2123px;">
内容
</div>
</div>
</div>
</div>
<!--侧边栏导入-->
<div class="sidebar-menu">
<div id="side"></div>
</div>
<div class="clearfix"> </div>
</div>
<script>
$("#head").load("com/head.html");
$("#side").load("com/side.html");
</script>
</body>
</html>
4：这个时候，就化繁为简了，页面代码看上去也就清爽多了。
原文作者：祈澈姑娘 技术博客：https://www.jianshu.com/u/05f416aefbe1
90后前端妹子，爱编程，爱运营，文艺与代码齐飞，魅力与智慧共存的程序媛一枚。
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