跨浏览器加载xml文件

var parseXml = {
  createXmlParser: function () { //IE创建此解析对象
    var versions = [
      ‘MSXML2.DOMDocument.6.0‘,
      ‘MSXML2.DOMDocument.3.0‘,
      ‘MSXML2.DOMDocument‘
    ];
    var xmlParse = null;
    for (var i = 0, length = versions.length; i < length; i++) {
      try {
        xmlParse = new ActiveXObject(versions[i]);
        if (xmlParse) {
          break;
        }
      } catch (error) {
      }
    }
    return xmlParse;
  },
  loadXml: function (xml) {
    if (typeof DOMParser != ‘undefined‘) { //非IE
      return (new DOMParser()).parseFromString(xml, ‘text/xml‘);
    } else if (this.createXmlParse()) { //IE下
      return this.createXmlParse().loadXML(xml);
    } else {
      throw new Error(‘no xml finded‘);
    }
  }//加载xml文件为DOM文件    
};