JS解析XML文件和XML字符串

<script type=‘text/javascript‘>
    loadXML = function(xmlString){
        var xmlDoc=null;
        //判断浏览器的类型
        //支持IE浏览器 
        if(!window.DOMParser && window.ActiveXObject){   //window.DOMParser 判断是否是非ie浏览器
            var xmlDomVersions = [‘MSXML.2.DOMDocument.6.0‘,‘MSXML.2.DOMDocument.3.0‘,‘Microsoft.XMLDOM‘];
            for(var i=0;i<xmlDomVersions.length;i++){
                try{
                    xmlDoc = new ActiveXObject(xmlDomVersions[i]);
                    xmlDoc.async = false;
                    xmlDoc.loadXML(xmlString); //loadXML方法载入xml字符串
                    break;
                }catch(e){
                }
            }
        }
        //支持Mozilla浏览器
        else if(window.DOMParser && document.implementation && document.implementation.createDocument){
            try{
                /* DOMParser 对象解析 XML 文本并返回一个 XML Document 对象。
                 * 要使用 DOMParser，使用不带参数的构造函数来实例化它，然后调用其 parseFromString() 方法
                 * parseFromString(text, contentType) 参数text:要解析的 XML 标记 参数contentType文本的内容类型
                 * 可能是 "text/xml" 、"application/xml" 或 "application/xhtml+xml" 中的一个。注意，不支持 "text/html"。
                 */
                domParser = new  DOMParser();
                xmlDoc = domParser.parseFromString(xmlString, ‘text/xml‘);
            }catch(e){
            }
        }
        else{
            return null;
        }

        return xmlDoc;
    }
</script>

<?xml version="1.0" encoding="utf-8" ?>
<DongFang>
  <Company>
    <cNname>1</cNname>
    <cIP>1</cIP>
  </Company>
  <Company>
    <cNname>2</cNname>
    <cIP>2</cIP>
  </Company>    
  <Company>
    <cNname>3</cNname>
    <cIP>3</cIP>
  </Company>
  <Company>
    <cNname>4</cNname>
    <cIP>4</cIP>
  </Company>
  <Company>
    <cNname>5</cNname>
    <cIP>5</cIP>
  </Company>
  <Company>
    <cNname>6</cNname>
    <cIP>6</cIP>
  </Company>
</DongFang>