IE和FireFox下javascript读写XML实现广告轮换(1)
最近更新网站首页广告，ASP.NET的广告控件很容易实现这点，可首页是静态页面，联想广告控件的原理决定采用Javascript+XML实现这点方面配置，更新广告时只要更新xml即可，方便了广告轮换xml结构如下<ad><tupian>http://www.seehaha.com/images/060901-150.100.2.gif</tupian><tupian>http://www.seehaha.com/xml/061009-300.100.jpg</tupian><dizhi>http://www.seehaha.com/plan/</dizhi><dizhi>http://www.seehaha.com/va.htm</dizhi></ad>==
// JScript 文件 var Now = new Date(); var Min = Now.getSeconds(); var i; if((Min % 2) == 1)//读取秒数，根据奇偶随机轮换，当然也可以改变此处算法增加xml节点数 { i = 1; } else { i = 0; }var url = "xml/ads.xml";String.prototype.Trim = function() { return this.replace(/(^\s*)(\s*$)/g, ""); }var xmlDoc;//判断是否为Firefox或IE var moz = (typeof document.implementation != 'undefined') && (typeof document.implementation.createDocument != 'undefined'); var ie = (typeof window.ActiveXObject != 'undefined');function importXML(file) { if (moz) { xmlDoc = document.implementation.createDocument("", "doc", null);//创建FIREFOX下XML文档对象 } else if (ie) { xmlDoc = new ActiveXObject("MSXML2.DOMDocument.3.0"); xmlDoc.async = false; while( xmlDoc.readyState != 4) {};//创建IE下XML文档对象 } xmlDoc.load(file);}importXML(url);//载入xmlfunction updatetupiandizhi(){if (moz) { var ad = xmlDoc.getElementsByTagName("ad")[0]; var tupian;
