Ajax+div page layout effect
This time I will bring you the effect of Ajax+divpage layout, what are the notes of Ajax+div page layout, the following is a practical case, let's take a look.
Effect demonstration:
①Default page (index.jsp):
②: Click on the left User Management# After selecting the user list option under the ## tag, the content of the default page on the right is updated to the content of the user list page (userList.jsp):
1:
Sample program for the entire demonstration Contains the default page (index.jsp), user list page (userList.jsp), product list page (productList.jsp), order management page (recordList.jsp) Uses the Bootstrap framework and FontAwesome icon ( No way, bootstrap comes with too few icons o(╯□╰)o). Please refer to the official website for how to use these two products. They are relatively simple. Let’s take a look at the code of index.jsp first. I basically commented in detail:<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="zh-CN">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge"> <%-- 在IE运行最新的渲染模式 --%>
<meta name="viewport" content="width=device-width, initial-scale=1"> <%-- 初始化移动浏览显示 --%>
<meta name="Author" content="Dreamer-1.">
<!-- 引入各种CSS样式表 -->
<link rel="stylesheet" href="css/bootstrap.css">
<link rel="stylesheet" href="css/font-awesome.css">
<link rel="stylesheet" href="css/index.css"> <!-- 修改自Bootstrap官方Demon，你可以按自己的喜好制定CSS样式 -->
<link rel="stylesheet" href="css/font-change.css"> <!-- 将默认字体从宋体换成微软雅黑（个人比较喜欢微软雅黑，移动端和桌面端显示效果比较接近） -->
<script type="text/javascript" src="js/jquery-1.12.3.min.js"></script>
<script type="text/javascript" src="js/bootstrap.min.js"></script>
<title>- 后台管理系统 -</title>
</head>
<body>
<!-- 顶部菜单（来自bootstrap官方Demon）==================================== -->
<nav class="navbar navbar-inverse navbar-fixed-top">
<p class="container">
<p class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" >
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="index.jsp">XXXX.com</a>
</p>
<p id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav navbar-right">
<li><a href="###" onclick="showAtRight('userList.jsp')"><i class="fa fa-users"></i> 用户列表</a></li>
<li><a href="###" onclick="showAtRight('productList.jsp')"><i class="fa fa-list-alt"></i> 产品列表</a></li>
<li><a href="###" onclick="showAtRight('recordList.jsp')" ><i class="fa fa-list"></i> 订单列表</a></li>
</ul>
</p>
</p>
</nav>
<!-- 左侧菜单选项========================================= -->
<p class="container-fluid">
<p class="row-fluie">
<p class="col-sm-3 col-md-2 sidebar">
<ul class="nav nav-sidebar">
<!-- 一级菜单 -->
<li class="active"><a href="#userMeun" class="nav-header menu-first collapsed" data-toggle="collapse">
<i class="fa fa-user"></i> 用户管理 <span class="sr-only">(current)</span></a>
</li>
<!-- 二级菜单 -->
<!-- 注意一级菜单中<a>标签内的href="#……"里面的内容要与二级菜单中<ul>标签内的id="……"里面的内容一致 -->
<ul id="userMeun" class="nav nav-list collapse menu-second">
<li><a href="###" onclick="showAtRight('userList.jsp')"><i class="fa fa-users"></i> 用户列表</a></li>
</ul>
<li><a href="#productMeun" class="nav-header menu-first collapsed" data-toggle="collapse">
<i class="fa fa-globe"></i> 产品管理 <span class="sr-only">(current)</span></a>
</li>
<ul id="productMeun" class="nav nav-list collapse menu-second">
<li><a href="###" onclick="showAtRight('productList.jsp')"><i class="fa fa-list-alt"></i> 产品列表</a></li>
</ul>
<li><a href="#recordMeun" class="nav-header menu-first collapsed" data-toggle="collapse">
<i class="fa fa-file-text"></i> 订单管理 <span class="sr-only">(current)</span></a>
</li>
<ul id="recordMeun" class="nav nav-list collapse menu-second">
<li><a href="###" onclick="showAtRight('recordList.jsp')" ><i class="fa fa-list"></i> 订单列表</a></li>
</ul>
</ul>
</p>
</p>
</p>
<!-- 右侧内容展示================================================== -->
<p class="col-sm-9 col-sm-offset-3 col-md-10 col-md-offset-2 main">
<h1 class="page-header"><i class="fa fa-cog fa-spin"></i> 控制台<small> 欢迎使用XXX后台管理系统</small></h1>
<!-- 载入左侧菜单指向的jsp（或html等）页面内容 -->
<p id="content">
<h4>
<strong>使用指南：</strong><br>
<br><br>默认页面内容……
</h4>
</p>
</p>
<script type="text/javascript">
/*
* 对选中的标签激活active状态，对先前处于active状态但之后未被选中的标签取消active
* （实现左侧菜单中的标签点击后变色的效果）
*/
$(document).ready(function () {
$('ul.nav > li').click(function (e) {
//e.preventDefault(); 加上这句则导航的<a>标签会失效
$('ul.nav > li').removeClass('active');
$(this).addClass('active');
});
});
/*
* 解决ajax返回的页面中含有javascript的办法：
* 把xmlHttp.responseText中的脚本都抽取出来，不管AJAX加载的HTML包含多少个脚本块，我们对找出来的脚本块都调用eval方法执行它即可
*/
function executeScript(html)
{
var reg = /<script[^>]*>([^\x00]+)$/i;
//对整段HTML片段按<\/script>拆分
var htmlBlock = html.split("<\/script>");
for (var i in htmlBlock)
{
var blocks;//匹配正则表达式的内容数组，blocks[1]就是真正的一段脚本内容，因为前面reg定义我们用了括号进行了捕获分组
if (blocks = htmlBlock[i].match(reg))
{
//清除可能存在的注释标记，对于注释结尾-->可以忽略处理，eval一样能正常工作
var code = blocks[1].replace(/<!--/, '');
try
{
eval(code) //执行脚本
}
catch (e)
{
}
}
}
}
/*
* 利用p实现左边点击右边显示的效果（以id="content"的p进行内容展示）
* 注意：
* ①：js获取网页的地址，是根据当前网页来相对获取的，不会识别根目录；
* ②：如果右边加载的内容显示页里面有css，必须放在主页（即例中的index.jsp）才起作用
* （如果单纯的两个页面之间include，子页面的css和js在子页面是可以执行的。 主页面也可以调用子页面的js。但这时要考虑页面中js和渲染的先后顺序 ）
*/
function showAtRight(url) {
var xmlHttp;
if (window.XMLHttpRequest) {
// code for IE7+, Firefox, Chrome, Opera, Safari
xmlHttp=new XMLHttpRequest(); //创建 XMLHttpRequest对象
}
else {
// code for IE6, IE5
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlHttp.onreadystatechange=function() {
//onreadystatechange — 当readystate变化时调用后面的方法
if (xmlHttp.readyState == 4) {
//xmlHttp.readyState == 4 —— finished downloading response
if (xmlHttp.status == 200) {
//xmlHttp.status == 200 —— 服务器反馈正常
document.getElementById("content").innerHTML=xmlHttp.responseText; //重设页面中id="content"的p里的内容
executeScript(xmlHttp.responseText); //执行从服务器返回的页面内容里包含的JavaScript函数
}
//错误状态处理
else if (xmlHttp.status == 404){
alert("出错了☹ （错误代码：404 Not Found），……！");
/* 对404的处理 */
return;
}
else if (xmlHttp.status == 403) {
alert("出错了☹ （错误代码：403 Forbidden），……");
/* 对403的处理 */
return;
}
else {
alert("出错了☹ （错误代码：" + request.status + "），……");
/* 对出现了其他错误代码所示错误的处理 */
return;
}
}
}
//把请求发送到服务器上的指定文件（url指向的文件）进行处理
xmlHttp.open("GET", url, true); //true表示异步处理
xmlHttp.send();
}
</script>
</body>
</html>Note:
If the icon of FontAwesomt is not displayed correctly, it is probably font-awesome The font file address in .css is wrong
Two:
userList.jsp page code:<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <p> 我是用户列表 (っ´Ι`)っ </p> </body> </html>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <p> 我是产品列表 ╰(￣▽￣)╭ </p> </body> </html>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <p> 我是订单列表 <(￣ˇ￣)/ </p> </body> </html>
How ajax implements remote communication function
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