I’ve been fine recently. I wrote a method that often requires the name of a city or province in a project, so I changed it to a class. It is convenient to call later
//******************************************************************************** //* * // 功能描述:从xml中获取数据 // 版本编号:owendu V1.1 // 初始创建: 2006.08.27 // 最后修改: 2006.10.08 //* * //******************************************************************************** //根据cityid,获取返回cityname ---------------xmlurl 指的是整个站点的路征 //页面调用方式如下:<script language=javascript>GetCityName("<%=cityid%>","<%=System.Configuration.ConfigurationSettings.AppSettings["LocalSiteURL"]%>")</script> function GetCityName(cityid,xmlurl) { var XmlDoc_city = new ActiveXObject("MSXML2.DOMDocument.3.0"); XmlDoc_city.async=false; XmlDoc_city.validateOnParse=false; var Url=xmlurl+"XmlData/city.xml"; XmlDoc_city.load(Url); // if (XmlDoc_city.readyState == 4 && XmlDoc_city.xml != "") { var city; var cities = XmlDoc_city.documentElement.selectNodes("city"); for (var i=0; i < cities.length; i++) { city = cities[i]; if (city.getAttribute("cityid") == cityid) { document.write(city.getAttribute("cityname")); break; } //obj2.options[obj2.length] = new Option(city.getAttribute("cityname"),city.getAttribute("cityid")); } } // else // { //alert('您的浏览器不支持xml文件读取,于是本页面禁止您的操作,推荐使用IE5.0以上可以解决此问题!'); // } } //根据省份id,获取返回省名 ---------------xmlurl 指的是整个站点的路征 function GetPRoviceName(pid,xmlurl) { var XmlDoc_city = new ActiveXObject("MSXML2.DOMDocument.3.0"); XmlDoc_city.async=false; XmlDoc_city.validateOnParse=false; var Url=xmlurl+"XmlData/province.xml"; XmlDoc_city.load(Url); if(XmlDoc_city.readyState == 4 && XmlDoc_city.xml != "") { var city; var cities = XmlDoc_city.documentElement.selectNodes("province"); for (var i=0; i < cities.length; i++) { city = cities[i]; if (city.getAttribute("provinceid") == pid) { document.write(city.getAttribute("provincename")); break; } } } } //根据地区districtid,获取返回地区名 ---------------xmlurl 指的是整个站点的路征 function GetProviceName(districtid,xmlurl) { var XmlDoc_city = new ActiveXObject("MSXML2.DOMDocument.3.0"); XmlDoc_city.async=false; XmlDoc_city.validateOnParse=false; var Url=xmlurl+"XmlData/district.xml"; XmlDoc_city.load(Url); if(XmlDoc_city.readyState == 4 && XmlDoc_city.xml != "") { var city; var cities = XmlDoc_city.documentElement.selectNodes("district"); for (var i=0; i < cities.length; i++) { city = cities[i]; if (city.getAttribute("districtid") == pid) { document.write(city.getAttribute("districtname")); break; } } } } //根据省份id,城市id,地区(县)id,获取返回省城市名地区名 ---------------xmlurl 指的是整个站点的路征 function GetName(pid,cityid,districtid ,xmlurl) { var cityname=""; var provicename=""; var districtname=""; // var XmlDoc_p = new ActiveXObject("MSXML2.DOMDocument.3.0"); XmlDoc_p.async=false; XmlDoc_p.validateOnParse=false; var UrlProvice=xmlurl+"XmlData/province.xml"; XmlDoc_p.load(UrlProvice); // var XmlDoc_city = new ActiveXObject("MSXML2.DOMDocument.3.0"); XmlDoc_city.async=false; XmlDoc_city.validateOnParse=false; var Urlcity=xmlurl+"XmlData/city.xml"; XmlDoc_city.load(Urlcity); // var XmlDoc_district = new ActiveXObject("MSXML2.DOMDocument.3.0"); XmlDoc_district.async=false; XmlDoc_district.validateOnParse=false; var Urldis=xmlurl+"XmlData/district.xml"; XmlDoc_district.load(Urldis); // if(XmlDoc_p.readyState == 4 && XmlDoc_p.xml != "") { var provice; var provices = XmlDoc_city.documentElement.selectNodes("province"); for (var i=0; i < provices.length; i++) { provice = provices[i]; if (provice.getAttribute("provinceid") == pid) { provicename=provice.getAttribute("provincename"); break; } } } if(XmlDoc_city.readyState == 4 && XmlDoc_city.xml != "") { var city; var citys = XmlDoc_city.documentElement.selectNodes("city"); for (var i=0; i < citys.length; i++) { city = citys[i]; if (city.getAttribute("cityid") == cityid) { cityname=city.getAttribute("cityname"); break; } } } if(XmlDoc_district.readyState == 4 && XmlDoc_district.xml != "") { var district; var districts = XmlDoc_district.documentElement.selectNodes("district"); for (var i=0; i < districts.length; i++) { district = districts[i]; if (district.getAttribute("districtid") == districtid) { districtname=district.getAttribute("districtname"); break; } } } var name=provicename+" "+cityname+" "+ districtname; document.write(name); }
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XML's role in RSSFeed is to structure data, standardize and provide scalability. 1.XML makes RSSFeed data structured, making it easy to parse and process. 2.XML provides a standardized way to define the format of RSSFeed. 3.XML scalability allows RSSFeed to add new tags and attributes as needed.

When processing XML and RSS data, you can optimize performance through the following steps: 1) Use efficient parsers such as lxml to improve parsing speed; 2) Use SAX parsers to reduce memory usage; 3) Use XPath expressions to improve data extraction efficiency; 4) implement multi-process parallel processing to improve processing speed.

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RSS is an XML-based format used to publish frequently updated content. 1. RSSfeed organizes information through XML structure, including title, link, description, etc. 2. Creating RSSfeed requires writing in XML structure, adding metadata such as language and release date. 3. Advanced usage can include multimedia files and classified information. 4. Use XML verification tools during debugging to ensure that the required elements exist and are encoded correctly. 5. Optimizing RSSfeed can be achieved by paging, caching and keeping the structure simple. By understanding and applying this knowledge, content can be effectively managed and distributed.

RSS is an XML-based format used to publish and subscribe to content. The XML structure of an RSS file includes a root element, an element, and multiple elements, each representing a content entry. Read and parse RSS files through XML parser, and users can subscribe and get the latest content.

XML has the advantages of structured data, scalability, cross-platform compatibility and parsing verification in RSS. 1) Structured data ensures consistency and reliability of content; 2) Scalability allows the addition of custom tags to suit content needs; 3) Cross-platform compatibility makes it work seamlessly on different devices; 4) Analytical and verification tools ensure the quality and integrity of the feed.

The implementation of RSS in XML is to organize content through a structured XML format. 1) RSS uses XML as the data exchange format, including elements such as channel information and project list. 2) When generating RSS files, content must be organized according to specifications and published to the server for subscription. 3) RSS files can be subscribed through a reader or plug-in to automatically update the content.

Advanced features of RSS include content namespaces, extension modules, and conditional subscriptions. 1) Content namespace extends RSS functionality, 2) Extended modules such as DublinCore or iTunes to add metadata, 3) Conditional subscription filters entries based on specific conditions. These functions are implemented by adding XML elements and attributes to improve information acquisition efficiency.


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