javascript Xml兼容性随笔

一、前言

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(function (window) {     if (!window.jasen) {         window.jasen = {};     }       if (!window.jasen.core) {         window.jasen.core = {};     }       //------------------------------------------------     // XML operation below.     //------------------------------------------------     if (!window.jasen.core.Xml) {         window.jasen.core.Xml = {};     }       if (typeof jasen.core.Xml != "object") {         throw new Error("Invalid entity jasen.core.Xml!");     }       function createXmlDocument() {         //IE         if (window.ActiveXObject) {             return new ActiveXObject("Microsoft.XMLDOM");         }         //W3C         else if (document.implementation && document.implementation.createDocument) {             return document.implementation.createDocument('', '', null);         }           throw new Error("Xml is not supported by your brower!");     }       function loadXmlFile(xmlFile) {         var xmlDocument = createXmlDocument();         xmlDocument.async = false;         xmlDocument.load(xmlFile);         return xmlDocument;     }       function loadXmlText(xmlText) {         // IE Must be tested first<br>        <br>        if (window.ActiveXObject) {             var xmlDocument = new ActiveXObject("Microsoft.XMLDOM");             xmlDocument.async = false;             xmlDocument.loadXML(xmlText);               return xmlDocument;         }         // W3C         else if(window.DOMParser) {             return (new DOMParser()).parseFromString(xmlText, "text/xml");         }           throw new Error("Xml is not supported by your brower!");     }       var Xml = window.Xml = window.jasen.core.Xml;     Xml.createDocument = createXmlDocument;     Xml.loadFile = loadXmlFile;     Xml.loadText = loadXmlText;   })(window);

 二、范例

 <script language="javascript" type="text/javascript">
        function testXml() {
            var xmlDoc = Xml.loadFile("/Xml/House.xml");
            var xmlDocElement = xmlDoc.documentElement; 
            var nodes = xmlDocElement.getElementsByTagName("city");
            var currNode = null;
             
            for (var i = 0; i < nodes.length; i++) {
                currNode = nodes[i]
            }

            var xmlText = "<address><city name='北京'><price>150万</price><type>一室三居</type></city></address>";
            xmlDocElement = Xml.loadText(xmlText);

            var cityName =  xmlDocElement.selectSingleNode("address/city/@name").nodeValue;
            var price = xmlDocElement.selectSingleNode("address/city/price/text()").nodeValue;
        } 
    </script>