求助一个层的定位问题
一个后台页面,
内空页面是在一个iframe里面显示的。
现在在内容页面,要加一个浮动层(显示一个等待的效果)。
结果那一个层只覆盖了内容页框架的内容。
我的要示是:覆盖整个页面,(也就是说,浮动层可以覆盖框架外的内容),
我该怎么做。
我想这样写了
- CSS code
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ --> #load{padding:10px; width:600px;height:300px; display:block; position: absolute; top:50%; left:50%; margin-left:-300px; margin-top:-150px;}
JS 是这样写的。
$("#load").css("display","block");
$("#img_load")[0].;
------解决方案--------------------
jquery 直接用div 弹出插件.设置 插件弹出的比例即可...不过 我忘记了那插件名字了.嘿嘿
------解决方案--------------------
jqModal
------解决方案--------------------
O(∩_∩)O哈哈~,我刚刚做了这个项目,给你点经验:
jQuery 操作IFRAME
DOM方法:
父窗口操作其下的IFRAME:window.frames["iframeName"].document
或者直接写frames["iframeName"].document
IFRAME操作父窗口: window.parent.document
或者直接写parent.document
jquery方法:
在父窗口中操作 其下IFRAME中的元素: $(window.frames["iframeName"].document).find(”:text”);
在IFRAME中操作 选中父窗口中的所有输入框:$(window.parent.document).find(”:text”);
使用find可以找到自己想要的东东。
想要找到同级的iframe,可以用$(parent.frames["iframeName"]).find("xxxxxx")
细心的朋友一下就能理解,原理其实很简单,就是用到了$(DOM对象)转换成jquery对象。
例子:
- HTML code
<!--index.php--> <script type="text/javascript"></script> <div id="ifr"> <iframe id="iframe" name="showMap" width="100%" height="600" src="map.php"></iframe> <br><font color="#e78608">------解决方案--------------------</font><br>你们要是真心的帮助LZ,那么就请贴出可供测试的代码<br>否则,我就要将此贴移动了 <br><font color="#e78608">------解决方案--------------------</font><br>好吧,我承认是着急了点,还是把上面的帖子移除吧,这是个可测试的:<br>在iframe的父级页面和元素页面必须都连接上<script type="text/javascript" src="jquery_1.4.2.js"></script> 才管用<br><dl class="code">HTML code<pre class="brush:php;toolbar:false"> <!--index.html--> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>无标题文档</title> <script type="text/javascript" src="jquery_1.4.2.js"></script> <div id="show3dmap" style="border:solid 1px">此div的宽高与body相当 <div id="ifr"> <iframe id="iframe" name="show" width="100%" height="600" src="cont.html"></iframe> </div> </div> <!--cont.html--> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>无标题文档</title> <script type="text/javascript" src="jquery_1.4.2.js"></script> <div>这是子页面 <input type="button" id="full" value="点击覆盖"> <input type="button" id="replace" value="点击替换父级div"> </div> <script> $("#replace").live("click",function(){ $(window.parent.document).find("#iframe").css({'display':'none','visibility':'hidden'}); $(window.parent.document).find("#show3dmap").html("<div id='rep' style='width:1200px;height:1000px;z-index:2;'>"+ "这里替换内容</script>
可定义按钮来关闭此div:

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.

PHP is not dead. 1) The PHP community actively solves performance and security issues, and PHP7.x improves performance. 2) PHP is suitable for modern web development and is widely used in large websites. 3) PHP is easy to learn and the server performs well, but the type system is not as strict as static languages. 4) PHP is still important in the fields of content management and e-commerce, and the ecosystem continues to evolve. 5) Optimize performance through OPcache and APC, and use OOP and design patterns to improve code quality.

PHP and Python have their own advantages and disadvantages, and the choice depends on the project requirements. 1) PHP is suitable for web development, easy to learn, rich community resources, but the syntax is not modern enough, and performance and security need to be paid attention to. 2) Python is suitable for data science and machine learning, with concise syntax and easy to learn, but there are bottlenecks in execution speed and memory management.

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.


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